| 祁连山区黑土滩人工草地对春季模拟放牧的响应 |
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| 引用本文： | 秦金萍,马玉寿,李世雄,刘颖,年勇,王彦龙,王晓丽,张金萍,施宝顺,冶旦木.祁连山区黑土滩人工草地对春季模拟放牧的响应[J].青海畜牧兽医杂志,2019(3):10-16. |
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| 作者姓名： | 秦金萍 马玉寿 李世雄 刘颖 年勇 王彦龙 王晓丽 张金萍 施宝顺 冶旦木 |
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| 作者单位： | 青海大学畜牧兽医科学院;青海大学三江源区高寒草地生态省部共建教育部重点实验室;互助县森林病虫害防治检疫站;青海省草原总站;祁连县草原监理工作站 |
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| 基金项目： | 青海省科技厅科技成果转化项目“高寒草地生态系统自然恢复技术集成与示范”(2018-SF-137) |
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| 摘 要： | 该研究于2018年牧草返青期以刈割模拟家畜采食行为,对祁连山区黑土滩人工草地进行了放牧强度(刈割率)为0、30%、50%、70%、90%的5级模拟放牧试验研究。结果表明,春季休牧(未刈割)和放牧强度(刈割率)为30%时,对黑土滩人工草地垂穗披碱草的后期生长发育没有影响,而随着放牧强度(刈割率)加大,垂穗披碱草的后期生长发育将会受到严重制约,当放牧强度(刈割率)达到90%时,垂穗披碱草的盖度、高度、牧草产量和种子产量分别较休牧降低了41.0%、73.0%、87.4%和88.9%,研究结果认为返青期过度放牧利用会引起黑土滩人工草地的快速退化。
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| 关 键 词： | 祁连山区 春季放牧 模拟放牧 放牧强度 黑土滩人工草地 垂穗披碱草 |
Response of black soil land artificial grassland to simulated grazing in spring in Qilian mountains area |
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| Institution: | (Academy of Animal Science and Veterinary Medicine of Qinghai University, Xining 810016) |
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| Abstract: | In this study,the grazing intensity(mowing rate)was 0,30%,50%,70%and 90%on the artificial grassland in the black soil land of Qilian mountains area were simulated by cutting to simulate the grazing behavior of livestock in 2018.The results showed that the non-spring grazing(un-mowing)and grazing intensity(mowing rate)were 30%,there was no effect on the late growth and development of ElymusnutansGriseb in the black soil land,but with the grazing intensity(mowing rate)increased,development of ElymusnutansGriseb will be severely restricted.in late the growth While the grazing intensity(mowing rate)was 90%,compared with non-grazing,the coverage,plant height,forage biomass and seed yield of ElymusnutansGriseb reduced by 41.0%,73.0%,87.4%and 88.9%.The results showed that excessive grazing utilization at returning green stage will cause rapid degradation of black soil land artificial grassland. |
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| Keywords: | Qilian Mountains area Spring grazing Simulated grazing Grazing intensity Black soil land artificial grassland ElymusnutansGriseb |
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