欧宝体育

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2012年29卷11期

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前植物生产层
不同林龄油茶林土壤酶活性及养分特征
2012, 6(11): 1647-1654.
[摘要](1171) [PDF 848KB](737)
摘要:
基于对江西不(bu)同林(lin)(lin)(lin)(lin)(lin)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)(Camellia oleifera)林(lin)(lin)(lin)(lin)(lin)下(xia)土(tu)壤(rang)(rang)养分含(han)量(liang)(liang)和(he)(he)(he)(he)(he)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)的(de)(de)测(ce)定,探讨了(le)不(bu)同林(lin)(lin)(lin)(lin)(lin)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)土(tu)壤(rang)(rang)养分、酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)特征及(ji)(ji)其相互关系。结果表(biao)明(ming),随着土(tu)层逐渐加(jia)深,油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)土(tu)壤(rang)(rang)养分含(han)量(liang)(liang)逐渐下(xia)降,过氧(yang)化(hua)氢(qing)酶(mei)(mei)(mei)、过氧(yang)化(hua)物酶(mei)(mei)(mei)和(he)(he)(he)(he)(he)蔗(zhe)(zhe)糖(tang)(tang)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)均(jun)表(biao)现为(wei)(wei)夏季(ji)(ji)(ji)高(gao)(gao)(gao)(gao)于秋(qiu)季(ji)(ji)(ji)。随着林(lin)(lin)(lin)(lin)(lin)龄(ling)(ling)(ling)的(de)(de)增加(jia),土(tu)壤(rang)(rang)养分含(han)量(liang)(liang)及(ji)(ji)土(tu)壤(rang)(rang)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)呈规律(lv)性(xing)(xing)(xing)变化(hua),0~20 cm土(tu)层,6种(zhong)林(lin)(lin)(lin)(lin)(lin)龄(ling)(ling)(ling)的(de)(de)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)和(he)(he)(he)(he)(he)无林(lin)(lin)(lin)(lin)(lin)地对照中,夏季(ji)(ji)(ji)有机质(zhi)含(han)量(liang)(liang)50(年)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)(G50yr)最(zui)高(gao)(gao)(gao)(gao),为(wei)(wei)3.89%;秋(qiu)季(ji)(ji)(ji)有机质(zhi)含(han)量(liang)(liang)10(年)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)(D10yr)最(zui)高(gao)(gao)(gao)(gao),为(wei)(wei)2.25%;夏、秋(qiu)季(ji)(ji)(ji)过氧(yang)化(hua)氢(qing)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)均(jun)以50(年)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)(G50yr)最(zui)高(gao)(gao)(gao)(gao),分别(bie)(bie)为(wei)(wei)2.12和(he)(he)(he)(he)(he)1.61 mLg-1。夏季(ji)(ji)(ji)过氧(yang)化(hua)物酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)和(he)(he)(he)(he)(he)蔗(zhe)(zhe)糖(tang)(tang)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)均(jun)以6(年)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)(C6yr)最(zui)高(gao)(gao)(gao)(gao),分别(bie)(bie)为(wei)(wei)2.45 Ug-1和(he)(he)(he)(he)(he)3.43 mLg-1。20~40 cm土(tu)层,6种(zhong)林(lin)(lin)(lin)(lin)(lin)龄(ling)(ling)(ling)的(de)(de)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)和(he)(he)(he)(he)(he)对照林(lin)(lin)(lin)(lin)(lin)分中,夏、秋(qiu)季(ji)(ji)(ji)有机质(zhi)含(han)量(liang)(liang)均(jun)以50(年)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)(G50yr)最(zui)高(gao)(gao)(gao)(gao),分别(bie)(bie)为(wei)(wei)1.97%和(he)(he)(he)(he)(he)1.31%,夏、秋(qiu)季(ji)(ji)(ji)过氧(yang)化(hua)氢(qing)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)均(jun)以50(年)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)(G50yr)最(zui)高(gao)(gao)(gao)(gao),分别(bie)(bie)为(wei)(wei)1.50 和(he)(he)(he)(he)(he)0.95 mLg-1,秋(qiu)季(ji)(ji)(ji)过氧(yang)化(hua)物酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)和(he)(he)(he)(he)(he)蔗(zhe)(zhe)糖(tang)(tang)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)均(jun)以C6yr最(zui)高(gao)(gao)(gao)(gao),分别(bie)(bie)为(wei)(wei)2.22 Ug-1和(he)(he)(he)(he)(he)1.33 mLg-1。相关分析表(biao)明(ming),不(bu)同林(lin)(lin)(lin)(lin)(lin)龄(ling)(ling)(ling)油(you)(you)(you)茶(cha)(cha)(cha)林(lin)(lin)(lin)(lin)(lin)各土(tu)层上土(tu)壤(rang)(rang)养分因(yin)子与土(tu)壤(rang)(rang)酶(mei)(mei)(mei)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)之间呈显著(zhu)或(huo)极显著(zhu)相关,过氧(yang)化(hua)氢(qing)酶(mei)(mei)(mei)、过氧(yang)化(hua)物酶(mei)(mei)(mei)、蔗(zhe)(zhe)糖(tang)(tang)酶(mei)(mei)(mei)可(ke)作(zuo)为(wei)(wei)评(ping)价土(tu)壤(rang)(rang)质(zhi)量(liang)(liang)及(ji)(ji)肥力较好的(de)(de)生(sheng)物学参考(kao)指标。
开垦种草对高寒草甸土壤理化性质的影响
2012, 6(11): 1655-1659.
[摘要](1165) [PDF 319KB](705)
摘要:
对玛曲高(gao)(gao)寒草(cao)甸天然草(cao)地(di)(di)(di)(di)(di)及开(kai)垦(ken)种(zhong)(zhong)草(cao)8年(nian)和20年(nian)草(cao)地(di)(di)(di)(di)(di)土(tu)壤(rang)(rang)(rang)(rang)理化性质进行了比(bi)(bi)较研(yan)究。结果表(biao)明,土(tu)壤(rang)(rang)(rang)(rang)含水(shui)量天然草(cao)地(di)(di)(di)(di)(di)显著(zhu)(zhu)高(gao)(gao)于(yu)(yu)开(kai)垦(ken)种(zhong)(zhong)草(cao)8年(nian)草(cao)地(di)(di)(di)(di)(di);土(tu)壤(rang)(rang)(rang)(rang)容(rong)重(zhong)0~10 cm土(tu)层(ceng)天然草(cao)地(di)(di)(di)(di)(di)显著(zhu)(zhu)高(gao)(gao)于(yu)(yu)开(kai)垦(ken)种(zhong)(zhong)草(cao)20年(nian)草(cao)地(di)(di)(di)(di)(di);0~60 cm土(tu)层(ceng)土(tu)壤(rang)(rang)(rang)(rang)有机(ji)碳(tan)含量天然草(cao)地(di)(di)(di)(di)(di)显著(zhu)(zhu)高(gao)(gao)于(yu)(yu)开(kai)垦(ken)种(zhong)(zhong)草(cao)草(cao)地(di)(di)(di)(di)(di),比(bi)(bi)开(kai)垦(ken)种(zhong)(zhong)草(cao)草(cao)地(di)(di)(di)(di)(di)高(gao)(gao)38.66%。土(tu)壤(rang)(rang)(rang)(rang)全(quan)氮、速效(xiao)氮、全(quan)磷和速效(xiao)磷含量天然草(cao)地(di)(di)(di)(di)(di)显著(zhu)(zhu)高(gao)(gao)于(yu)(yu)开(kai)垦(ken)种(zhong)(zhong)草(cao)草(cao)地(di)(di)(di)(di)(di)。土(tu)壤(rang)(rang)(rang)(rang)全(quan)氮、速效(xiao)氮和全(quan)磷含量随(sui)开(kai)垦(ken)种(zhong)(zhong)草(cao)年(nian)限增加逐渐下降。各(ge)样地(di)(di)(di)(di)(di)土(tu)壤(rang)(rang)(rang)(rang)全(quan)氮、速效(xiao)氮与土(tu)壤(rang)(rang)(rang)(rang)有机(ji)碳(tan)呈显著(zhu)(zhu)正相关关系。
西藏阿里草地资源现状及载畜量
2012, 6(11): 1660-1664.
[摘要](1227) [PDF 406KB](752)
摘要:
以西藏阿里地(di)(di)(di)(di)区(qu)草(cao)(cao)(cao)地(di)(di)(di)(di)为研究对象,对草(cao)(cao)(cao)地(di)(di)(di)(di)资(zi)源概况、草(cao)(cao)(cao)地(di)(di)(di)(di)资(zi)源类型和草(cao)(cao)(cao)地(di)(di)(di)(di)载畜量(liang)等进(jin)行了分析。阿里地(di)(di)(di)(di)区(qu)草(cao)(cao)(cao)地(di)(di)(di)(di)理(li)论载畜量(liang)为299.37万绵(mian)羊单(dan)位(wei)(wei),2010年实际载畜量(liang)为346.66万绵(mian)羊单(dan)位(wei)(wei),实际载畜量(liang)与理(li)论载畜量(liang)相比超载15.80%。通(tong)过(guo)分析认为,阿里地(di)(di)(di)(di)区(qu)应因地(di)(di)(di)(di)制宜地(di)(di)(di)(di)发(fa)展(zhan)(zhan)草(cao)(cao)(cao)地(di)(di)(di)(di)畜牧业(ye),合理(li)布局草(cao)(cao)(cao)地(di)(di)(di)(di)载畜量(liang),科学(xue)利用草(cao)(cao)(cao)地(di)(di)(di)(di)资(zi)源,促进(jin)草(cao)(cao)(cao)地(di)(di)(di)(di)畜牧业(ye)可持续发(fa)展(zhan)(zhan)。
草地植被恢复措施对高寒草甸有毒植物的影响
2012, 6(11): 1665-1670.
[摘要](1024) [PDF 500KB](679)
摘要:
通过对(dui)(dui)高寒草(cao)(cao)甸天然草(cao)(cao)地(di)(di)(di)(di)实施(shi)(shi)(shi)划破(po)、补(bu)播(bo)(bo)(bo)、施(shi)(shi)(shi)肥(fei)及(ji)综合处(chu)(chu)(chu)(chu)理(li),探讨了(le)不(bu)同(tong)草(cao)(cao)地(di)(di)(di)(di)植(zhi)(zhi)(zhi)被恢复措施(shi)(shi)(shi)对(dui)(dui)高寒草(cao)(cao)甸有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)种组(zu)成、多样(yang)性及(ji)生(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)量(liang)的(de)(de)(de)影响。结果表明,不(bu)同(tong)处(chu)(chu)(chu)(chu)理(li)草(cao)(cao)地(di)(di)(di)(di)中,有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)(de)组(zu)成及(ji)比例差异显著(P0.05)。与(yu)对(dui)(dui)照相(xiang)比,补(bu)播(bo)(bo)(bo)、划破(po)和施(shi)(shi)(shi)肥(fei)均不(bu)同(tong)程度地(di)(di)(di)(di)降低了(le)群(qun)(qun)落中有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)(de)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)种数(shu)和ShannonWiener指数(shu)(P0.05),不(bu)同(tong)处(chu)(chu)(chu)(chu)理(li)草(cao)(cao)地(di)(di)(di)(di)有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)种数(shu)和ShannonWiener指数(shu)排序分别(bie)为(wei)补(bu)播(bo)(bo)(bo)施(shi)(shi)(shi)肥(fei)=综合处(chu)(chu)(chu)(chu)理(li)划破(po)对(dui)(dui)照,补(bu)播(bo)(bo)(bo)划破(po)施(shi)(shi)(shi)肥(fei)对(dui)(dui)照综合处(chu)(chu)(chu)(chu)理(li)。补(bu)播(bo)(bo)(bo)、施(shi)(shi)(shi)肥(fei)和综合处(chu)(chu)(chu)(chu)理(li)均可(ke)有(you)(you)(you)(you)(you)效(xiao)降低群(qun)(qun)落中有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)(de)地(di)(di)(di)(di)上(shang)(shang)生(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)量(liang)(P0.05),而草(cao)(cao)地(di)(di)(di)(di)划破(po)在一(yi)定程度上(shang)(shang)增加了(le)有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)(de)地(di)(di)(di)(di)上(shang)(shang)生(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)量(liang)(P0.05),不(bu)同(tong)处(chu)(chu)(chu)(chu)理(li)草(cao)(cao)地(di)(di)(di)(di)有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)地(di)(di)(di)(di)上(shang)(shang)生(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)量(liang)排序为(wei)补(bu)播(bo)(bo)(bo)综合处(chu)(chu)(chu)(chu)理(li)施(shi)(shi)(shi)肥(fei)对(dui)(dui)照划破(po)。补(bu)播(bo)(bo)(bo)形成的(de)(de)(de)垂穗披碱草(cao)(cao)(Elymus nutans)单一(yi)优势群(qun)(qun)落使有(you)(you)(you)(you)(you)毒植(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)种数(shu)、物(wu)(wu)(wu)(wu)(wu)(wu)(wu)种多样(yang)性及(ji)地(di)(di)(di)(di)上(shang)(shang)生(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)(wu)量(liang)均下降到(dao)最低值,对(dui)(dui)于毒杂草(cao)(cao)型退(tui)化草(cao)(cao)地(di)(di)(di)(di)的(de)(de)(de)改良,草(cao)(cao)地(di)(di)(di)(di)补(bu)播(bo)(bo)(bo)是可(ke)供参考的(de)(de)(de)有(you)(you)(you)(you)(you)效(xiao)恢复措施(shi)(shi)(shi)之一(yi)。
地毯草耐铝性初步评价
2012, 6(11): 1671-1677.
[摘要](1192) [PDF 618KB](645)
摘要:
本研究选(xuan)取相(xiang)(xiang)(xiang)对(dui)(dui)(dui)(dui)总二级(ji)分(fen)(fen)(fen)(fen)枝个(ge)数(shu)比、相(xiang)(xiang)(xiang)对(dui)(dui)(dui)(dui)总茎长比、叶片枯黄率、坪用质(zhi)(zhi)量(liang)、相(xiang)(xiang)(xiang)对(dui)(dui)(dui)(dui)地(di)上部(bu)干质(zhi)(zhi)量(liang)比和(he)相(xiang)(xiang)(xiang)对(dui)(dui)(dui)(dui)地(di)下部(bu)干质(zhi)(zhi)量(liang)比6个(ge)指(zhi)标(biao)(biao),对(dui)(dui)(dui)(dui)不同(tong)地(di)理分(fen)(fen)(fen)(fen)布的(de)19份(fen)地(di)毯草(cao)(cao)(Axonopus compressus)种质(zhi)(zhi)和(he)1份(fen)品(pin)种的(de)耐(nai)铝(lv)(lv)性差异(yi)进(jin)行初(chu)步评价,从而明确地(di)毯草(cao)(cao)种质(zhi)(zhi)的(de)耐(nai)铝(lv)(lv)性。结果(guo)表明,在(zai)2.10 mmolL-1的(de)铝(lv)(lv)处理后,不同(tong)种质(zhi)(zhi)之间的(de)生(sheng)长存(cun)在(zai)显著(zhu)(zhu)(P<0.05)或(huo)极显著(zhu)(zhu)(P<0.01)差异(yi),不同(tong)指(zhi)标(biao)(biao)间的(de)变异(yi)系(xi)数(shu)范围为(wei)(wei)18.73%~39.63%,其(qi)中相(xiang)(xiang)(xiang)对(dui)(dui)(dui)(dui)地(di)上部(bu)干质(zhi)(zhi)量(liang)变异(yi)系(xi)数(shu)比最小(18.73%),而坪用质(zhi)(zhi)量(liang)最大(39.63%);部(bu)分(fen)(fen)(fen)(fen)指(zhi)标(biao)(biao)间存(cun)在(zai)极显著(zhu)(zhu)相(xiang)(xiang)(xiang)关(guan)(P<0.01),相(xiang)(xiang)(xiang)关(guan)系(xi)数(shu)最高达(da)-0.920;聚类分(fen)(fen)(fen)(fen)析表明,20份(fen)优良品(pin)种被分(fen)(fen)(fen)(fen)为(wei)(wei)三(san)大类,即耐(nai)铝(lv)(lv)型、中间型和(he)敏铝(lv)(lv)型。
天祝县天然草地退化成因及对策分析
2012, 6(11): 1678-1683.
[摘要](1289) [PDF 535KB](663)
摘要:
2010年天(tian)祝县天(tian)然草(cao)(cao)(cao)地(di)退化(hua)(hua)面积为(wei)23.00万hm2,占草(cao)(cao)(cao)地(di)面积的(de)58.76%,目前仍以(yi)每(mei)年1.33万hm2的(de)速(su)度退化(hua)(hua)。草(cao)(cao)(cao)地(di)退化(hua)(hua)是自然因素和人为(wei)因素共同作(zuo)用(yong)的(de)结果,但超载过牧是主要(yao)原因,它引起天(tian)然草(cao)(cao)(cao)地(di)由轻度退化(hua)(hua)向(xiang)中(zhong)度和重度退化(hua)(hua)演(yan)变。因此,本(ben)研究以(yi)控制(zhi)载畜(chu)量、解决草(cao)(cao)(cao)畜(chu)矛盾为(wei)核心措施(shi),提(ti)出(chu)天(tian)然草(cao)(cao)(cao)地(di)综合治(zhi)理对策,以(yi)促进天(tian)祝县天(tian)然草(cao)(cao)(cao)地(di)走上可持续发展(zhan)的(de)道路,为(wei)祁连山(shan)草(cao)(cao)(cao)地(di)资源合理利用(yong)和草(cao)(cao)(cao)地(di)退化(hua)(hua)防治(zhi)提(ti)供(gong)技术参(can)考。
草人诗记
二十一重读朱光潜《给青年的十二封信》
2012, 6(11): 1684-1685.
[摘要](932) [PDF 335KB](1533)
摘要:
植物生产层
不同产地麦冬遗传多样性的SRAP分析
2012, 6(11): 1686-1691.
[摘要](1059) [PDF 433KB](738)
摘要:
本研究(jiu)使用(yong)SRAP分(fen)子标记技(ji)术对(dui)48份不同(tong)(tong)产地(di)的麦冬进行遗传(chuan)多(duo)(duo)样(yang)性分(fen)析(xi),筛选出(chu)11对(dui)有效(xiao)引物组合(he)。11对(dui)引物组合(he)共扩(kuo)增(zeng)出(chu)621条(tiao)清晰、可辨认条(tiao)带,平均(jun)每对(dui)引物扩(kuo)增(zeng)出(chu)56.45条(tiao)带纹,多(duo)(duo)态性条(tiao)带为(wei)(wei)621条(tiao),多(duo)(duo)态性位(wei)点(dian)百(bai)分(fen)率为(wei)(wei)100%,遗传(chuan)相似系(xi)数(GS)范(fan)围为(wei)(wei) 0.058 4~0.936 7,平均(jun)为(wei)(wei)0.497 5,说明(ming)供试(shi)材(cai)料具有丰富的遗传(chuan)多(duo)(duo)样(yang)性。对(dui)所有材(cai)料聚类分(fen)析(xi)发现(xian),在遗传(chuan)距离0.81处(chu)可将材(cai)料分(fen)为(wei)(wei)六大类群,部(bu)分(fen)来自同(tong)(tong)一(yi)地(di)理位(wei)置的材(cai)料可聚为(wei)(wei)一(yi)类
苦豆子种质资源遗传多样性的RAPD分析
2012, 6(11): 1692-1697.
[摘要](1024) [PDF 500KB](557)
摘要:
为深入研(yan)究(jiu)(jiu)并充分(fen)(fen)利(li)用野生苦(ku)(ku)豆子(zi)(Sophora alopecuroides)资源,本研(yan)究(jiu)(jiu)利(li)用RAPD技术对22个(ge)苦(ku)(ku)豆子(zi)居(ju)群(qun)进行研(yan)究(jiu)(jiu),从DNA水平(ping)探讨苦(ku)(ku)豆子(zi)种质资源的(de)遗传多样(yang)性(xing)。结果表(biao)明,筛(shai)选得(de)到的(de)31条(tiao)(tiao)RAPD随机引(yin)物共检测出314条(tiao)(tiao)扩(kuo)增DNA片(pian)段(duan),其中多态性(xing)条(tiao)(tiao)带285条(tiao)(tiao),多态性(xing)比(bi)率(lv)为90.76%。Neis遗传多样(yang)性(xing)指数(H)为0.301 5,Shannon信息指数(I)为0.453 1,遗传距离变化范围为0.114~0.709,所研(yan)究(jiu)(jiu)的(de)苦(ku)(ku)豆子(zi)居(ju)群(qun)间具有丰富的(de)遗传多样(yang)性(xing)。UPGMA聚(ju)类分(fen)(fen)析和(he)主成分(fen)(fen)分(fen)(fen)析(PCA)结果显示,22个(ge)苦(ku)(ku)豆子(zi)居(ju)群(qun)聚(ju)为6类,不同居(ju)群(qun)间出现了一定(ding)的(de)遗传分(fen)(fen)化。
30份野牛草种质的遗传多样性
2012, 6(11): 1698-1705.
[摘要](1289) [PDF 622KB](711)
摘要:
以(yi)从美国(guo)及(ji)中国(guo)收集的(de)(de)30份(fen)野(ye)(ye)牛(niu)(niu)草(cao)(cao)(Buchloe dactyloides)种质为(wei)研(yan)究对象,对供(gong)试(shi)(shi)材(cai)料(liao)的(de)(de)基(ji)本坪用性状如叶(ye)(ye)长(zhang)(zhang)、叶(ye)(ye)宽、株高、茎(jing)粗(cu)、分蘖(nie)数(shu)、匍(pu)(pu)(pu)匐(fu)茎(jing)数(shu)量、匍(pu)(pu)(pu)匐(fu)茎(jing)长(zhang)(zhang)度(du)、匍(pu)(pu)(pu)匐(fu)茎(jing)节数(shu)、叶(ye)(ye)色(se)、叶(ye)(ye)片枯黄(huang)程度(du)等(deng)进行(xing)(xing)田间观测。利(li)用简单重(zhong)复序(xu)列(lie)(ISSR)分子标记技术,对供(gong)试(shi)(shi)野(ye)(ye)牛(niu)(niu)草(cao)(cao)的(de)(de)遗(yi)(yi)(yi)传(chuan)(chuan)(chuan)多样性进行(xing)(xing)分析。研(yan)究结(jie)果显(xian)示,1)供(gong)试(shi)(shi)材(cai)料(liao)的(de)(de)叶(ye)(ye)色(se)呈(cheng)现显(xian)著(zhu)(zhu)差异(yi)(yi)(yi)(yi)(P0.05),叶(ye)(ye)长(zhang)(zhang)、叶(ye)(ye)宽、茎(jing)粗(cu)、株高、匍(pu)(pu)(pu)匐(fu)茎(jing)长(zhang)(zhang)度(du)和匍(pu)(pu)(pu)匐(fu)茎(jing)节数(shu)差异(yi)(yi)(yi)(yi)极显(xian)著(zhu)(zhu)(P0.01),分蘖(nie)数(shu)、匍(pu)(pu)(pu)匐(fu)茎(jing)数(shu)目(mu)和叶(ye)(ye)片枯黄(huang)程度(du)没有显(xian)著(zhu)(zhu)差异(yi)(yi)(yi)(yi);2)7个(ge)ISSR引(yin)物(wu)对30份(fen)不同(tong)地理来源的(de)(de)野(ye)(ye)牛(niu)(niu)草(cao)(cao)进行(xing)(xing)扩增,共检测到108个(ge)扩增位点,其(qi)中多态性位点90个(ge),多态性比率(lv)(PPB)为(wei)82.6%,平(ping)均每(mei)条引(yin)物(wu)可以(yi)扩增出15.6条带,说(shuo)明供(gong)试(shi)(shi)的(de)(de)野(ye)(ye)牛(niu)(niu)草(cao)(cao)材(cai)料(liao)间遗(yi)(yi)(yi)传(chuan)(chuan)(chuan)差异(yi)(yi)(yi)(yi)较(jiao)大(da);3)30份(fen)野(ye)(ye)牛(niu)(niu)草(cao)(cao)的(de)(de)遗(yi)(yi)(yi)传(chuan)(chuan)(chuan)相似系(xi)数(shu)(GS)值变(bian)化范围为(wei)0.546~0.880,表明了供(gong)试(shi)(shi)材(cai)料(liao)具有丰(feng)富(fu)的(de)(de)遗(yi)(yi)(yi)传(chuan)(chuan)(chuan)多样性;4)在遗(yi)(yi)(yi)传(chuan)(chuan)(chuan)距离的(de)(de)基(ji)础上进行(xing)(xing)UPGMA聚类分析,30份(fen)野(ye)(ye)牛(niu)(niu)草(cao)(cao)可被分为(wei)5组,该(gai)结(jie)果表明遗(yi)(yi)(yi)传(chuan)(chuan)(chuan)距离的(de)(de)差异(yi)(yi)(yi)(yi)是导(dao)致供(gong)试(shi)(shi)野(ye)(ye)牛(niu)(niu)草(cao)(cao)材(cai)料(liao)整体遗(yi)(yi)(yi)传(chuan)(chuan)(chuan)差异(yi)(yi)(yi)(yi)较(jiao)大(da)的(de)(de)主要原因。
白三叶种质资源形态变异与地理起源的关系
2012, 6(11): 1706-1714.
[摘要](1069) [PDF 422KB](532)
摘要:
分(fen)(fen)析了(le)原(yuan)产于(yu)1.02~55.8 N,87.12 E~8.9 W,海(hai)拔2~2 804 m,分(fen)(fen)属(shu)于(yu)29个(ge)国(guo)家的(de)(de)(de)(de)68份白三(san)(san)(san)叶(Trifolium repens)种质资源(yuan)(yuan)的(de)(de)(de)(de)形(xing)(xing)态特(te)征变(bian)异(yi)(yi)(yi)及其(qi)与地(di)理起(qi)源(yuan)(yuan)的(de)(de)(de)(de)关系。结(jie)果表明,1)供(gong)试白三(san)(san)(san)叶叶片大小(xiao)(xiao)变(bian)异(yi)(yi)(yi)最(zui)大,其(qi)次(ci)是单位面积花序数和(he)株高(gao),而生殖枝高(gao)度和(he)每花序小(xiao)(xiao)花数变(bian)异(yi)(yi)(yi)较小(xiao)(xiao);2)Mantel检验表明,株高(gao)、单位面积花序数、每花序小(xiao)(xiao)花数3个(ge)性(xing)状变(bian)化(hua)(hua)存在显著(zhu)(P<0.05)的(de)(de)(de)(de)空间(jian)关联性(xing),而生殖枝高(gao)度和(he)叶面积与空间(jian)的(de)(de)(de)(de)相关性(xing)不(bu)显著(zhu);3)聚类分(fen)(fen)析显示,白三(san)(san)(san)叶形(xing)(xing)态变(bian)异(yi)(yi)(yi)与地(di)理起(qi)源(yuan)(yuan)呈较密(mi)切的(de)(de)(de)(de)相关性(xing),而不(bu)同起(qi)源(yuan)(yuan)的(de)(de)(de)(de)白三(san)(san)(san)叶亦出现了(le)相似的(de)(de)(de)(de)遗传分(fen)(fen)化(hua)(hua),原(yuan)产欧洲的(de)(de)(de)(de)白三(san)(san)(san)叶形(xing)(xing)态朝不(bu)同方向的(de)(de)(de)(de)进化(hua)(hua)趋势明显。
波斯菊核型分析
2012, 6(11): 1715-1717.
[摘要](1019) [PDF 340KB](662)
摘要:
采用常规压片(pian)制片(pian)法,对波斯菊(Cosmos bipinnatus)进行了染(ran)色(se)(se)体数目(mu)观(guan)察及核(he)(he)型分析(xi),旨在为波斯菊种(zhong)质(zhi)鉴定、起源分析(xi)、物种(zhong)演(yan)替、良种(zhong)培(pei)育提供必要的(de)细胞学依据(ju)。试(shi)验结(jie)果表明,波斯菊染(ran)色(se)(se)体数目(mu)为2n=24,核(he)(he)型公式(shi)2n=2x=24=18m(1sat)+6sm(1sat)。波斯菊染(ran)色(se)(se)体相(xiang)对长度的(de)平均值为6.20%~9.06%,最长和最短的(de)染(ran)色(se)(se)体比(bi)值为1.47,臂比(bi)大于2∶1 的(de)染(ran)色(se)(se)体占染(ran)色(se)(se)体总数的(de)16.7%,属于2A型;不对称(cheng)系(xi)数为43.25%,对称(cheng)程度较高(gao),为较对称(cheng)类型。
黑麦草属28个引进品种辐射子一代的生长性状比较
2012, 6(11): 1718-1723.
[摘要](1155) [PDF 390KB](689)
摘要:
本(ben)研(yan)究利用400、500 Gy的60Co射(she)线辐(fu)射(she)28个欧洲(zhou)引进黑麦草(cao)(cao)(Lolium)干(gan)种(zhong)子,结合大田(tian)试验(yan)比较(jiao)了辐(fu)射(she)对(dui)不同黑麦草(cao)(cao)品(pin)种(zhong)发芽、分(fen)(fen)蘖数(shu)(shu)、株(zhu)(zhu)(zhu)高(gao)、鲜(xian)质量(liang)(liang)、抽穗期(qi)等(deng)生长(zhang)性(xing)状的影响。结果表(biao)明(ming),28个品(pin)种(zhong)对(dui)射(she)线辐(fu)照处(chu)理(li)的反应存在(zai)明(ming)显(xian)差异(yi),Gordo、Ligrande、Barmultra对(dui)60Co射(she)线敏感,低剂量(liang)(liang)处(chu)理(li)即(ji)导致死亡(wang),高(gao)剂量(liang)(liang)处(chu)理(li)后(hou)Remy、Bartissimo死亡(wang)。射(she)线辐(fu)照处(chu)理(li)能够改变黑麦草(cao)(cao)分(fen)(fen)蘖数(shu)(shu)、株(zhu)(zhu)(zhu)高(gao)、鲜(xian)质量(liang)(liang)、抽穗期(qi)等(deng)生长(zhang)性(xing)状,并(bing)显(xian)著增加Zarastro、Barfort、Tosca、Orlando诱变材(cai)料的分(fen)(fen)蘖数(shu)(shu),Lolita诱变后(hou)植株(zhu)(zhu)(zhu)高(gao)度和(he)鲜(xian)质量(liang)(liang)比未辐(fu)照处(chu)理(li)材(cai)料高(gao)20%以上,表(biao)明(ming)60Co射(she)线辐(fu)照处(chu)理(li)是快速提(ti)高(gao)牧草(cao)(cao)分(fen)(fen)蘖数(shu)(shu)、株(zhu)(zhu)(zhu)高(gao)和(he)鲜(xian)质量(liang)(liang)的有效途径之一,可(ke)作为新材(cai)料用于进一步的新品(pin)种(zhong)选(xuan)育。
干旱胁迫下4种委陵菜属植物叶片的超微结构
2012, 6(11): 1724-1730.
[摘要](1054) [PDF 1951KB](628)
摘要:
以4种野生委(wei)(wei)陵(ling)(ling)菜(cai)(cai)(cai)(cai)(cai)属(Potentilla)植物作为(wei)研究对象,通过透视(shi)电镜观察干(gan)旱(han)胁(xie)迫条件下其(qi)叶(ye)(ye)片超(chao)微结构(gou)(gou)的变化。结果表明,随着干(gan)旱(han)胁(xie)迫的加强(qiang),叶(ye)(ye)绿(lv)(lv)体(ti)和线粒(li)体(ti)的受(shou)损程度逐(zhu)渐(jian)增大,嗜锇颗粒(li)的数(shu)(shu)量也(ye)逐(zhu)渐(jian)增加,叶(ye)(ye)绿(lv)(lv)体(ti)逐(zhu)渐(jian)减小且(qie)数(shu)(shu)量略有(you)增加。通过对比同(tong)一干(gan)旱(han)胁(xie)迫条件下4种植物叶(ye)(ye)绿(lv)(lv)体(ti)和线粒(li)体(ti)的受(shou)损程度,判断其(qi)耐(nai)旱(han)能力强(qiang)弱为(wei)轮叶(ye)(ye)委(wei)(wei)陵(ling)(ling)菜(cai)(cai)(cai)(cai)(cai)(P.verticillaris)白叶(ye)(ye)委(wei)(wei)陵(ling)(ling)菜(cai)(cai)(cai)(cai)(cai)(P.leucophylla)翻白委(wei)(wei)陵(ling)(ling)菜(cai)(cai)(cai)(cai)(cai)(P.discolor)委(wei)(wei)陵(ling)(ling)菜(cai)(cai)(cai)(cai)(cai)(P.chinensis)。因此(ci),干(gan)旱(han)胁(xie)迫下叶(ye)(ye)绿(lv)(lv)体(ti)、线粒(li)体(ti)结构(gou)(gou)的破坏程度可以作为(wei)评(ping)价委(wei)(wei)陵(ling)(ling)菜(cai)(cai)(cai)(cai)(cai)属植物耐(nai)旱(han)性强(qiang)弱的形(xing)态结构(gou)(gou)指标之一。
米氏冰草种群种子产量与种子雨的时间动态
2012, 6(11): 1731-1735.
[摘要](1065) [PDF 406KB](563)
摘要:
对(dui)呼伦贝(bei)尔沙化(hua)(hua)草(cao)(cao)地(di)半(ban)(ban)固(gu)(gu)定(ding)沙地(di)和固(gu)(gu)定(ding)沙地(di)的(de)米(mi)(mi)(mi)氏(shi)(shi)(shi)冰草(cao)(cao)(Agropyron michnoi)种(zhong)(zhong)(zhong)群(qun)(qun)种(zhong)(zhong)(zhong)子(zi)(zi)雨时间(jian)动态(tai)及有(you)性(xing)繁(fan)(fan)殖(zhi)特性(xing)进行了(le)研究(jiu)。结果表明,米(mi)(mi)(mi)氏(shi)(shi)(shi)冰草(cao)(cao)种(zhong)(zhong)(zhong)群(qun)(qun)的(de)种(zhong)(zhong)(zhong)子(zi)(zi)雨时期(qi)集中在(zai)8月8日-9月22日,持续45 d。米(mi)(mi)(mi)氏(shi)(shi)(shi)冰草(cao)(cao)种(zhong)(zhong)(zhong)群(qun)(qun)种(zhong)(zhong)(zhong)子(zi)(zi)雨强(qiang)度的(de)波(bo)动变化(hua)(hua)均与最(zui)大风速呈线性(xing)回归关系(xi)。不同生境(jing)之(zhi)间(jian),半(ban)(ban)固(gu)(gu)定(ding)沙地(di)的(de)米(mi)(mi)(mi)氏(shi)(shi)(shi)冰草(cao)(cao)的(de)种(zhong)(zhong)(zhong)子(zi)(zi)雨强(qiang)度总(zong)是显(xian)(xian)著高于固(gu)(gu)定(ding)沙地(di)。半(ban)(ban)固(gu)(gu)定(ding)沙地(di)的(de)米(mi)(mi)(mi)氏(shi)(shi)(shi)冰草(cao)(cao)的(de)有(you)性(xing)繁(fan)(fan)殖(zhi)体的(de)穗(sui)长、穗(sui)宽(kuan)、单穗(sui)质量(liang)、每(mei)穗(sui)上(shang)的(de)小穗(sui)数量(liang)及种(zhong)(zhong)(zhong)子(zi)(zi)百(bai)粒重等均显(xian)(xian)著高于固(gu)(gu)定(ding)沙地(di)。在(zai)半(ban)(ban)固(gu)(gu)定(ding)沙地(di)和固(gu)(gu)定(ding)沙地(di)种(zhong)(zhong)(zhong)子(zi)(zi)雨数量(liang)分别(bie)占其种(zhong)(zhong)(zhong)子(zi)(zi)产量(liang)的(de)29%和10%。因(yin)此,沙地(di)微生境(jing)的(de)变化(hua)(hua)对(dui)米(mi)(mi)(mi)氏(shi)(shi)(shi)冰草(cao)(cao)种(zhong)(zhong)(zhong)子(zi)(zi)雨散布的(de)时期(qi)及波(bo)动规律(lv)无(wu)影响,而对(dui)其有(you)性(xing)繁(fan)(fan)殖(zhi)体的(de)形态(tai)特征具有(you)显(xian)(xian)著影响。
用灰色关联度法综合评价扁蓿豆生产性能
2012, 6(11): 1736-1742.
[摘要](1089) [PDF 432KB](565)
摘要:
应用(yong)灰色(se)关联度法对来(lai)(lai)自(zi)内蒙古(gu)13个地区的(de)(de)20份(fen)野生(sheng)(sheng)(sheng)扁蓿豆(Medicago ruthenica)材料在(zai)内蒙古(gu)呼和浩(hao)特市(shi)的(de)(de)栽(zai)培(pei)生(sheng)(sheng)(sheng)产(chan)(chan)(chan)性能(neng)进行综(zong)合(he)评价(jia),采用(yong)株高(gao)、生(sheng)(sheng)(sheng)育(yu)期、株高(gao)生(sheng)(sheng)(sheng)长速(su)度、干(gan)鲜(xian)(xian)比(bi)、鲜(xian)(xian)草(cao)(cao)产(chan)(chan)(chan)量(liang)、干(gan)草(cao)(cao)产(chan)(chan)(chan)量(liang)和种(zhong)子(zi)产(chan)(chan)(chan)量(liang)等(deng)指标(biao)建立评价(jia)模(mo)型,综(zong)合(he)评价(jia)各(ge)材料的(de)(de)栽(zai)培(pei)生(sheng)(sheng)(sheng)产(chan)(chan)(chan)性能(neng)。结(jie)果表明,栽(zai)培(pei)生(sheng)(sheng)(sheng)产(chan)(chan)(chan)性能(neng)表现较好的(de)(de)材料有来(lai)(lai)自(zi)锡(xi)林(lin)郭勒盟(meng)灰腾梁的(de)(de)M4、通辽市(shi)的(de)(de)M8、锡(xi)林(lin)郭勒盟(meng)西苏旗(qi)的(de)(de)M5和通辽市(shi)的(de)(de)M6,而来(lai)(lai)自(zi)包头(tou)市(shi)达(da)茂旗(qi)的(de)(de)M20、乌兰察布市(shi)四子(zi)王旗(qi)的(de)(de)M19、锡(xi)林(lin)浩(hao)特市(shi)的(de)(de)M3和赤峰市(shi)的(de)(de)M10栽(zai)培(pei)生(sheng)(sheng)(sheng)产(chan)(chan)(chan)性能(neng)较低。根(gen)据各(ge)性状指标(biao)的(de)(de)权(quan)重(zhong)比(bi)较种(zhong)子(zi)产(chan)(chan)(chan)量(liang)所占的(de)(de)权(quan)重(zhong)为株高(gao)生(sheng)(sheng)(sheng)育(yu)期株高(gao)生(sheng)(sheng)(sheng)长速(su)度干(gan)草(cao)(cao)产(chan)(chan)(chan)量(liang)鲜(xian)(xian)草(cao)(cao)产(chan)(chan)(chan)量(liang)干(gan)鲜(xian)(xian)比(bi)。
沿淮地区季节性栽培紫花苜蓿的适宜播种期
2012, 6(11): 1743-1748.
[摘要](1298) [PDF 412KB](655)
摘要:
为(wei)研究播(bo)种(zhong)(zhong)时间对(dui)季(ji)(ji)节(jie)性栽(zai)培(pei)紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)(Medicago sativa)产(chan)量(liang)及其影响(xiang)因(yin)子(zi)的(de)(de)(de)(de)影响(xiang),以紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)维多利亚品种(zhong)(zhong)为(wei)试验材料,于2009―2011年在(zai)阜(fu)南、淮安(an)两地(di)进行田间试验。结(jie)果表明(ming),秋(qiu)播(bo)、春季(ji)(ji)刈割2茬的(de)(de)(de)(de)栽(zai)培(pei)模(mo)式下,随播(bo)期推迟,紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)的(de)(de)(de)(de)各生(sheng)长性状和产(chan)量(liang)均呈下降趋势。其中,淮安(an)试验点9月(yue)(yue)(yue)6日播(bo)种(zhong)(zhong)的(de)(de)(de)(de)紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)第1茬初(chu)花(hua)(hua)期平(ping)均株(zhu)高(gao)(gao)达(da)到91.91 cm,比10月(yue)(yue)(yue)24日播(bo)种(zhong)(zhong)高(gao)(gao)出(chu)1.14倍;相(xiang)应(ying)地(di),9月(yue)(yue)(yue)6日播(bo)种(zhong)(zhong)的(de)(de)(de)(de)紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)鲜、干(gan)(gan)物质(zhi)(zhi)产(chan)量(liang)也最高(gao)(gao),第1茬分(fen)别达(da)到4.37和1.05 kgm-2。对(dui)产(chan)量(liang)影响(xiang)因(yin)子(zi)的(de)(de)(de)(de)分(fen)析发现,紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)干(gan)(gan)物质(zhi)(zhi)产(chan)量(liang)分(fen)别与株(zhu)高(gao)(gao)、分(fen)枝(zhi)数(shu)和单(dan)株(zhu)干(gan)(gan)质(zhi)(zhi)量(liang)呈显(xian)著(P0.05)或极显(xian)著(P0.01)相(xiang)关。通(tong)(tong)径分(fen)析发现,株(zhu)高(gao)(gao)和单(dan)株(zhu)干(gan)(gan)质(zhi)(zhi)量(liang)是紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)产(chan)量(liang)的(de)(de)(de)(de)最主(zhu)要(yao)影响(xiang)因(yin)子(zi)。结(jie)果显(xian)示,早播(bo)主(zhu)要(yao)通(tong)(tong)过促进株(zhu)高(gao)(gao)生(sheng)长、增加单(dan)株(zhu)干(gan)(gan)质(zhi)(zhi)量(liang)来提高(gao)(gao)饲草(cao)的(de)(de)(de)(de)干(gan)(gan)物质(zhi)(zhi)产(chan)量(liang)。综合2年试验结(jie)果可以认为(wei),季(ji)(ji)节(jie)性栽(zai)培(pei)紫(zi)花(hua)(hua)苜(mu)(mu)蓿(xu)(xu)在(zai)沿(yan)淮地(di)区的(de)(de)(de)(de)适宜播(bo)种(zhong)(zhong)时间在(zai)9月(yue)(yue)(yue)至10月(yue)(yue)(yue)上旬。
氮缓释复合肥对玉米青贮品质的影响
2012, 6(11): 1749-1754.
[摘要](1139) [PDF 488KB](571)
摘要:
河北坝上地区地处(chu)中国农(nong)(nong)牧(mu)交错(cuo)带的(de)华北段,农(nong)(nong)业生产(chan)以农(nong)(nong)牧(mu)复合经营为(wei)主(zhu),但是草食家(jia)畜(chu)(chu)的(de)饲草料品(pin)质(zhi)(zhi)(zhi)差、资源短缺是该地区发(fa)展畜(chu)(chu)牧(mu)业的(de)瓶颈(jing)。采用(yong)随机(ji)区组试验,研究(jiu)氮(dan)缓释(shi)肥(fei)脲醛(quan)含(han)(han)量(liang)(liang)(20%、30%和(he)40%)和(he)施(shi)氮(dan)量(liang)(liang)(30、60、90、120、150和(he)180 kghm-2)对坝上饲用(yong)玉米(Zea mays)青(qing)(qing)贮(zhu)(zhu)后的(de)营养品(pin)质(zhi)(zhi)(zhi)和(he)发(fa)酵品(pin)质(zhi)(zhi)(zhi)的(de)影响,以解决该地区青(qing)(qing)贮(zhu)(zhu)饲料品(pin)质(zhi)(zhi)(zhi)差的(de)问题。结果表(biao)明(ming),当缓释(shi)肥(fei)的(de)脲醛(quan)含(han)(han)量(liang)(liang)为(wei)40%时(shi),青(qing)(qing)贮(zhu)(zhu)的(de)营养品(pin)质(zhi)(zhi)(zhi)较(jiao)(jiao)好(hao),但其有(you)机(ji)酸(suan)的(de)产(chan)量(liang)(liang)低(di)于脲醛(quan)含(han)(han)量(liang)(liang)为(wei)30%和(he)20%缓释(shi)肥(fei)处(chu)理的(de)玉米青(qing)(qing)贮(zhu)(zhu)。比较(jiao)(jiao)不同含(han)(han)氮(dan)量(liang)(liang)的(de)缓释(shi)肥(fei),当施(shi)用(yong)缓释(shi)肥(fei)的(de)含(han)(han)氮(dan)量(liang)(liang)为(wei)120 kghm-2时(shi),玉米青(qing)(qing)贮(zhu)(zhu)含(han)(han)氮(dan)量(liang)(liang)和(he)干物质(zhi)(zhi)(zhi)含(han)(han)量(liang)(liang)较(jiao)(jiao)高,青(qing)(qing)贮(zhu)(zhu)中中性(xing)洗涤纤维(wei)和(he)酸(suan)性(xing)洗涤纤维(wei)含(han)(han)量(liang)(liang)较(jiao)(jiao)低(di),青(qing)(qing)贮(zhu)(zhu)中有(you)机(ji)酸(suan)含(han)(han)量(liang)(liang)较(jiao)(jiao)高,青(qing)(qing)贮(zhu)(zhu)品(pin)质(zhi)(zhi)(zhi)较(jiao)(jiao)好(hao)。
硼肥对热研11号黑籽雀稗种子产量和发芽的影响
2012, 6(11): 1755-1759.
[摘要](1332) [PDF 381KB](712)
摘要:
: 研(yan)究硼肥(fei)(fei)对(dui)(dui)热研(yan)11号黑籽雀稗(Paspalum atratum cv. Reyan 11)种子(zi)(zi)产量(liang)和(he)品质的(de)影响。试验设9个硼肥(fei)(fei)处(chu)理,质量(liang)分(fen)数(shu)范围为(wei)0~4.0%,分(fen)3次施入。结果表明,施硼量(liang)3.0%(3%的(de)硼酸分(fen)3次施入: 400 mL+400 mL+600 mL)的(de)效果最好(hao),种子(zi)(zi)产量(liang)达1 124.4 kghm-2。施硼肥(fei)(fei)可(ke)提高生殖(zhi)枝(zhi)数(shu)、小花(hua)数(shu)/小穗、可(ke)育小花(hua)数(shu)/小穗和(he)种子(zi)(zi)千(qian)粒重,但(dan)对(dui)(dui)小穗数(shu)/生殖(zhi)枝(zhi)影响不显著;施硼肥(fei)(fei)能提高种子(zi)(zi)的(de)发芽(ya)(ya)率、发芽(ya)(ya)势、发芽(ya)(ya)指数(shu)以及芽(ya)(ya)长和(he)芽(ya)(ya)质量(liang)。施硼量(liang)3.0%可(ke)以使发芽(ya)(ya)率达到(dao)20.17%,比(bi)对(dui)(dui)照提高了30%。
不同播深下硬秆仲彬草种子萌发及幼苗生长
2012, 6(11): 1760-1764.
[摘要](1196) [PDF 476KB](633)
摘要:
模拟硬(ying)(ying)(ying)秆仲彬草(Kengyili rigidula)种(zhong)(zhong)子(zi)(zi)(zi)自然埋藏深度状况,设计0、1、2、3、4和(he)5 cm共6个(ge)播(bo)深,研究了其出(chu)(chu)苗(miao)率(lv)(lv)(lv)及幼苗(miao)生长(zhang)对(dui)播(bo)深的响(xiang)应。结(jie)果表明(ming),不(bu)同的播(bo)深对(dui)硬(ying)(ying)(ying)秆仲彬草的种(zhong)(zhong)子(zi)(zi)(zi)萌(meng)发率(lv)(lv)(lv)、幼苗(miao)出(chu)(chu)苗(miao)率(lv)(lv)(lv)和(he)种(zhong)(zhong)子(zi)(zi)(zi)休(xiu)眠(mian)率(lv)(lv)(lv)有显著(zhu)影(ying)响(xiang)。硬(ying)(ying)(ying)秆仲彬草种(zhong)(zhong)子(zi)(zi)(zi)出(chu)(chu)苗(miao)率(lv)(lv)(lv)随播(bo)深的增加呈下(xia)降(jiang)趋势,播(bo)深为(wei)1 cm时(shi)出(chu)(chu)苗(miao)率(lv)(lv)(lv)最(zui)高为(wei)78.4%,播(bo)深为(wei)2和(he)3 cm时(shi)分别为(wei)63.2%和(he)63.6%,播(bo)深为(wei)0时(shi)最(zui)低(di),为(wei)13.6%,与前三者有显著(zhu)差异。硬(ying)(ying)(ying)秆仲彬草种(zhong)(zhong)子(zi)(zi)(zi)最(zui)适宜的播(bo)深为(wei)1~3 cm,0及4 cm以上(shang)播(bo)深不(bu)利于其出(chu)(chu)苗(miao)和(he)幼苗(miao)生长(zhang)
刈割对干热河谷海狮苏丹草生长的影响
2012, 6(11): 1765-1770.
[摘要](1062) [PDF 680KB](583)
摘要:
以海(hai)狮苏(su)(su)丹(dan)草(Sorghum sudanense)为材料(liao)研(yan)究(jiu)在(zai)留茬5、10、15 cm条件(jian)下,其(qi)植株(zhu)高(gao)度、分蘖及单位面积产量等的(de)动态变化情况,并(bing)通过构(gou)造一(yi)年生(sheng)(sheng)苏(su)(su)丹(dan)草刈割株(zhu)高(gao)生(sheng)(sheng)长(zhang)(zhang)线性(xing)模型来分析其(qi)单作(zuo)群(qun)落(luo)植物个(ge)体(ti)生(sheng)(sheng)长(zhang)(zhang)情况与整体(ti)生(sheng)(sheng)物量的(de)关系(xi)。结果(guo)表(biao)明,在(zai)一(yi)个(ge)生(sheng)(sheng)长(zhang)(zhang)周期内(nei),不同(tong)刈割区海(hai)狮苏(su)(su)丹(dan)草单作(zuo)群(qun)落(luo)的(de)总(zong)生(sheng)(sheng)物量在(zai)一(yi)定(ding)范(fan)围(wei)内(nei)达到相(xiang)对稳(wen)定(ding)状(zhuang)态;不同(tong)刈割时期内(nei)植株(zhu)个(ge)体(ti)生(sheng)(sheng)长(zhang)(zhang)速率与生(sheng)(sheng)长(zhang)(zhang)潜(qian)力呈显(xian)著(zhu)负(fu)相(xiang)关,表(biao)明苏(su)(su)丹(dan)草单作(zuo)群(qun)落(luo)个(ge)体(ti)有通过平(ping)衡自身生(sheng)(sheng)长(zhang)(zhang)速率与生(sheng)(sheng)长(zhang)(zhang)潜(qian)力的(de)关系(xi)使群(qun)落(luo)总(zong)生(sheng)(sheng)物量在(zai)一(yi)定(ding)范(fan)围(wei)内(nei)维持(chi)相(xiang)对稳(wen)定(ding)状(zhuang)态的(de)倾向。
胡枝子属植物遗传多样性及其应用价值研究进展
2012, 6(11): 1771-1777.
[摘要](1028) [PDF 524KB](583)
摘要:
胡(hu)(hu)枝子(zi)(zi)(zi)属植(zhi)物(wu)具有多种(zhong)优良特性(xing),应(ying)用(yong)(yong)前景非(fei)常广泛。本研(yan)究(jiu)从形态学、生(sheng)化(hua)、细(xi)胞学和(he)分(fen)子(zi)(zi)(zi)4个水平探讨胡(hu)(hu)枝子(zi)(zi)(zi)属植(zhi)物(wu)遗(yi)传多样性(xing)的研(yan)究(jiu)进展,并对胡(hu)(hu)枝子(zi)(zi)(zi)属植(zhi)物(wu)的饲用(yong)(yong)、生(sheng)态及药用(yong)(yong)等应(ying)用(yong)(yong)价(jia)值(zhi)进行综述,为(wei)胡(hu)(hu)枝子(zi)(zi)(zi)属植(zhi)物(wu)的种(zhong)质资源进一步研(yan)究(jiu)提供(gong)参考依据。
动物生产层
甘肃环县两种沙打旺蛀秆害虫数量随季节、年份和草地年龄的变化动态
2012, 6(11): 1778-1784.
[摘要](1158) [PDF 711KB](589)
摘要:
沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)是我(wo)国(guo)北方(fang)主要(yao)的(de)(de)豆科(ke)牧(mu)草(cao)(cao)和(he)水土(tu)保持植物(wu),害(hai)(hai)(hai)虫(chong)(chong)(chong)(chong)是其(qi)生(sheng)(sheng)(sheng)产的(de)(de)限制因素之(zhi)一(yi)(yi),其(qi)中(zhong)(zhong)沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)小(xiao)(xiao)食(shi)心虫(chong)(chong)(chong)(chong)(Crapholita shadawana)(卷(juan)蛾(e)科(ke))和(he)沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)黑(hei)潜蝇(ying)(ying)(Melanagromyza adsurgenis)(潜蝇(ying)(ying)科(ke))为(wei)(wei)重要(yao)的(de)(de)蛀秆害(hai)(hai)(hai)虫(chong)(chong)(chong)(chong)。本(ben)研究于(yu)(yu)(yu)2004年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)、2005年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)和(he)2006年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)8月(yue)或9月(yue)以及在(zai)(zai)2005年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)5月(yue)(返青后期(qi))、6月(yue)(拔(ba)节(jie)期(qi))和(he)8月(yue)(开花初期(qi))调查了甘肃(su)(su)环县4个年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)份(fen)(fen)(fen)(1998年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)、2000年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)、2002年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)和(he)2003年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian))建(jian)(jian)(jian)植的(de)(de)沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)草(cao)(cao)地(di)(di)上(shang)(shang)(shang)(shang)此(ci)两(liang)虫(chong)(chong)(chong)(chong)的(de)(de)发(fa)(fa)生(sheng)(sheng)(sheng)规律,发(fa)(fa)现(xian)(xian)其(qi)发(fa)(fa)生(sheng)(sheng)(sheng)与年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)份(fen)(fen)(fen)、草(cao)(cao)地(di)(di)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)和(he)季节(jie)有关,两(liang)虫(chong)(chong)(chong)(chong)分(fen)别(bie)为(wei)(wei)害(hai)(hai)(hai)3龄(ling)(ling)(ling)(ling)以上(shang)(shang)(shang)(shang)(含3龄(ling)(ling)(ling)(ling))和(he)8龄(ling)(ling)(ling)(ling)以下(含8龄(ling)(ling)(ling)(ling))沙(sha)(sha)打(da)(da)(da)旺(wang)(wang),植株被害(hai)(hai)(hai)率分(fen)别(bie)为(wei)(wei)20.0%~100.0%和(he)52.0%~100.0%,其(qi)中(zhong)(zhong)2005年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)发(fa)(fa)生(sheng)(sheng)(sheng)最(zui)(zui)普遍,植株被害(hai)(hai)(hai)率均为(wei)(wei)100%。虫(chong)(chong)(chong)(chong)口(kou)数量(liang)(liang)随(sui)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)份(fen)(fen)(fen)变(bian)化,其(qi)中(zhong)(zhong)在(zai)(zai)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)最(zui)(zui)大(da)(da)(1998年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)建(jian)(jian)(jian)植)和(he)最(zui)(zui)小(xiao)(xiao)(2003年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)建(jian)(jian)(jian)植)的(de)(de)草(cao)(cao)地(di)(di)上(shang)(shang)(shang)(shang),沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)小(xiao)(xiao)食(shi)心虫(chong)(chong)(chong)(chong)在(zai)(zai)2006年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)时(shi)的(de)(de)百枝(zhi)虫(chong)(chong)(chong)(chong)量(liang)(liang)均显(xian)著(zhu)(zhu)(P0.05)低于(yu)(yu)(yu)其(qi)他(ta)两(liang)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian),而(er)在(zai)(zai)其(qi)他(ta)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)的(de)(de)草(cao)(cao)地(di)(di)上(shang)(shang)(shang)(shang)则均显(xian)著(zhu)(zhu)(P0.05)高于(yu)(yu)(yu)其(qi)他(ta)两(liang)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian),3年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)中(zhong)(zhong)最(zui)(zui)高达65.8头(tou)百枝(zhi)-1(即65.8%的(de)(de)枝(zhi)条(tiao)受(shou)害(hai)(hai)(hai),1998年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)建(jian)(jian)(jian)植2004年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)数据);沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)黑(hei)潜蝇(ying)(ying)在(zai)(zai)2006年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)时(shi)在(zai)(zai)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)最(zui)(zui)小(xiao)(xiao)草(cao)(cao)地(di)(di)上(shang)(shang)(shang)(shang)显(xian)著(zhu)(zhu)(P0.05)高于(yu)(yu)(yu)其(qi)他(ta)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)份(fen)(fen)(fen),在(zai)(zai)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)最(zui)(zui)大(da)(da)草(cao)(cao)地(di)(di)上(shang)(shang)(shang)(shang)则显(xian)著(zhu)(zhu)低于(yu)(yu)(yu)(P0.05)其(qi)他(ta)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)份(fen)(fen)(fen),3年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)中(zhong)(zhong)最(zui)(zui)高达38.8头(tou)百枝(zhi)-1(即38.8%的(de)(de)枝(zhi)条(tiao)受(shou)害(hai)(hai)(hai),2000年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)建(jian)(jian)(jian)植2004年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)数据)。基于(yu)(yu)(yu)4个年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)度建(jian)(jian)(jian)植的(de)(de)草(cao)(cao)地(di)(di)在(zai)(zai)调查年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)份(fen)(fen)(fen)中(zhong)(zhong)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)与百枝(zhi)虫(chong)(chong)(chong)(chong)量(liang)(liang)的(de)(de)关系可知,总体上(shang)(shang)(shang)(shang),两(liang)虫(chong)(chong)(chong)(chong)的(de)(de)虫(chong)(chong)(chong)(chong)口(kou)数量(liang)(liang)均随(sui)着草(cao)(cao)地(di)(di)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)的(de)(de)增加(jia)而(er)增加(jia)(年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)度有波动),分(fen)别(bie)于(yu)(yu)(yu)7龄(ling)(ling)(ling)(ling)和(he)8龄(ling)(ling)(ling)(ling)时(shi)达到(dao)高峰,此(ci)后随(sui)着草(cao)(cao)地(di)(di)的(de)(de)衰(shuai)退而(er)急(ji)剧下降(jiang)。在(zai)(zai)同(tong)一(yi)(yi)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)份(fen)(fen)(fen)的(de)(de)不(bu)同(tong)生(sheng)(sheng)(sheng)长季节(jie),两(liang)虫(chong)(chong)(chong)(chong)均于(yu)(yu)(yu)6月(yue)开始为(wei)(wei)害(hai)(hai)(hai)(5月(yue)时(shi)未见发(fa)(fa)生(sheng)(sheng)(sheng)),但沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)小(xiao)(xiao)食(shi)心在(zai)(zai)6月(yue)时(shi)仅出(chu)现(xian)(xian)在(zai)(zai)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)最(zui)(zui)大(da)(da)草(cao)(cao)地(di)(di),在(zai)(zai)各龄(ling)(ling)(ling)(ling)草(cao)(cao)地(di)(di)上(shang)(shang)(shang)(shang)8月(yue)的(de)(de)百枝(zhi)虫(chong)(chong)(chong)(chong)量(liang)(liang)显(xian)著(zhu)(zhu)(P0.05)高于(yu)(yu)(yu)6月(yue),而(er)沙(sha)(sha)打(da)(da)(da)旺(wang)(wang)黑(hei)潜蝇(ying)(ying)6月(yue)时(shi)百枝(zhi)虫(chong)(chong)(chong)(chong)量(liang)(liang)已达最(zui)(zui)大(da)(da)值(zhi),除(chu)年(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)(nian)龄(ling)(ling)(ling)(ling)最(zui)(zui)小(xiao)(xiao)草(cao)(cao)地(di)(di)外均显(xian)著(zhu)(zhu)(P0.05)高于(yu)(yu)(yu)8月(yue)。在(zai)(zai)同(tong)一(yi)(yi)枝(zhi)中(zhong)(zhong)未发(fa)(fa)现(xian)(xian)2种害(hai)(hai)(hai)虫(chong)(chong)(chong)(chong),也未发(fa)(fa)现(xian)(xian)2头(tou)或2头(tou)以上(shang)(shang)(shang)(shang)的(de)(de)同(tong)一(yi)(yi)害(hai)(hai)(hai)虫(chong)(chong)(chong)(chong)。受(shou)害(hai)(hai)(hai)枝(zhi)条(tiao)外观(guan)与未危害(hai)(hai)(hai)枝(zhi)条(tiao)无(wu)明显(xian)差异,故剖(pou)茎观(guan)察虫(chong)(chong)(chong)(chong)体、虫(chong)(chong)(chong)(chong)洞(dong)和(he)虫(chong)(chong)(chong)(chong)粪(fen)是判别(bie)枝(zhi)条(tiao)是否(fou)受(shou)害(hai)(hai)(hai)的(de)(de)主要(yao)方(fang)法(fa)。甘肃(su)(su)省为(wei)(wei)此(ci)两(liang)虫(chong)(chong)(chong)(chong)的(de)(de)新分(fen)布省份(fen)(fen)(fen)。
甘肃省牛、羊肉产品竞争力分析及提升对策
2012, 6(11): 1785-1790.
[摘要](890) [PDF 426KB](566)
摘要:
应用比较(jiao)(jiao)(jiao)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)法、产(chan)(chan)(chan)(chan)业集中(zhong)度指(zhi)数(shu)法以(yi)(yi)及(ji)成本收益分(fen)析法,多角度测算了甘肃省特色畜(chu)产(chan)(chan)(chan)(chan)品(pin)牛(niu)(niu)(niu)、羊(yang)(yang)肉(rou)的(de)竞争力(li)。结果表明,目前(qian)甘肃省牛(niu)(niu)(niu)、羊(yang)(yang)养殖依然以(yi)(yi)小规(gui)模(mo)(mo)(mo)散养为(wei)主,牛(niu)(niu)(niu)肉(rou)生产(chan)(chan)(chan)(chan)并不具(ju)有(you)规(gui)模(mo)(mo)(mo)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi),而羊(yang)(yang)肉(rou)生产(chan)(chan)(chan)(chan)的(de)规(gui)模(mo)(mo)(mo)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)微弱;从产(chan)(chan)(chan)(chan)量优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)看,牛(niu)(niu)(niu)、羊(yang)(yang)肉(rou)生产(chan)(chan)(chan)(chan)均(jun)(jun)具(ju)有(you)较(jiao)(jiao)(jiao)强(qiang)的(de)比较(jiao)(jiao)(jiao)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi);在规(gui)模(mo)(mo)(mo)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)和(he)产(chan)(chan)(chan)(chan)量优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)共同作用下,甘肃省牛(niu)(niu)(niu)肉(rou)的(de)综合比较(jiao)(jiao)(jiao)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)日益凸显,羊(yang)(yang)肉(rou)的(de)综合比较(jiao)(jiao)(jiao)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)则稳步(bu)提(ti)(ti)升。2008年牛(niu)(niu)(niu)肉(rou)生产(chan)(chan)(chan)(chan)区(qu)域(yu)集中(zhong)度为(wei)57.932 6%,具(ju)有(you)较(jiao)(jiao)(jiao)强(qiang)的(de)市(shi)场控制力(li),而羊(yang)(yang)肉(rou)生产(chan)(chan)(chan)(chan)的(de)区(qu)域(yu)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)较(jiao)(jiao)(jiao)弱,仅(jin)为(wei)48.918 7%;从区(qu)域(yu)分(fen)布上看,牛(niu)(niu)(niu)、羊(yang)(yang)肉(rou)生产(chan)(chan)(chan)(chan)的(de)优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)区(qu)域(yu)呈现出(chu)不断(duan)向(xiang)河(he)西走廊和(he)少数(shu)民族地(di)区(qu)集聚的(de)趋势(shi)(shi)(shi)(shi)。甘肃省牛(niu)(niu)(niu)、羊(yang)(yang)肉(rou)无论是(shi)销(xiao)售价格(ge)还是(shi)生产(chan)(chan)(chan)(chan)成本较(jiao)(jiao)(jiao)全国平均(jun)(jun)水(shui)平和(he)西部畜(chu)牧大省均(jun)(jun)具(ju)有(you)较(jiao)(jiao)(jiao)强(qiang)的(de)竞争优(you)(you)(you)(you)势(shi)(shi)(shi)(shi)。最后,提(ti)(ti)出(chu)了进一步(bu)提(ti)(ti)升牛(niu)(niu)(niu)、羊(yang)(yang)肉(rou)产(chan)(chan)(chan)(chan)品(pin)竞争力(li)的(de)政策建议。
后生物生产层
高寒草地畜牧业产业化的障碍与实现路径以甘南州合作市为例
2012, 6(11): 1791-1797.
[摘要](1319) [PDF 711KB](582)
摘要:
草(cao)(cao)地(di)畜(chu)牧(mu)(mu)(mu)业(ye)(ye)是(shi)合作市(shi)的主导产(chan)(chan)业(ye)(ye),受自(zi)然条件和社(she)会经(jing)济发育程(cheng)(cheng)度(du)的深刻影响,农牧(mu)(mu)(mu)业(ye)(ye)经(jing)济要(yao)素互(hu)补性差;畜(chu)牧(mu)(mu)(mu)业(ye)(ye)内(nei)部同(tong)构(gou)性较强(qiang)(qiang),区域分工不(bu)明显;畜(chu)产(chan)(chan)品的商品化(hua)(hua)过程(cheng)(cheng)粗放、低(di)质、低(di)效(xiao);畜(chu)产(chan)(chan)品加工企(qi)业(ye)(ye)门类不(bu)全,规模不(bu)大(da),带动性差;普遍缺(que)少各种(zhong)形式的中(zhong)介机构(gou)和协会,农牧(mu)(mu)(mu)民自(zi)组织能力不(bu)足;缺(que)少交易市(shi)场(chang),要(yao)素流(liu)动受阻(zu),致使畜(chu)牧(mu)(mu)(mu)业(ye)(ye)产(chan)(chan)业(ye)(ye)化(hua)(hua)进程(cheng)(cheng)缓慢。因此,在保护草(cao)(cao)原生态环境的前提下,加强(qiang)(qiang)基地(di)建设,大(da)力发展(zhan)龙头企(qi)业(ye)(ye),强(qiang)(qiang)化(hua)(hua)农牧(mu)(mu)(mu)业(ye)(ye)服务(wu)体系,实现草(cao)(cao)地(di)畜(chu)牧(mu)(mu)(mu)业(ye)(ye)向现代(dai)畜(chu)牧(mu)(mu)(mu)业(ye)(ye)转型(xing)。
《欧宝体育》刊载论文的知识图谱分析
2012, 6(11): 1798-1801.
[摘要](1000) [PDF 351KB](572)
摘要:
利用CNKI中(zhong)(zhong)国学术文献网(wang)络(luo)出版总库检索平台,从年度分布、机(ji)构共(gong)现、关键词共(gong)现等方面(mian)对(dui)《欧(ou)宝体育》创刊以来的(de)刊载(zai)论文进行(xing)知识图谱分析,发(fa)(fa)现研(yan)究热点主要(yao)集中(zhong)(zhong)在(zai)草地农业(ye)的(de)可持(chi)续发(fa)(fa)展和牧草适应性评价方面(mian),并且研(yan)究机(ji)构之间存(cun)在(zai)广泛的(de)合作关系。
欧宝体育