模拟放牧强度对针茅再生性能的影响  

Effect of simulate grazing intensity on regrowth capability of Stipa capillata

作　　者：张荣华[1] 安沙舟[1] 杨海宽[1] 李海 李军保[1] 

机构地区：[1]新疆农业大学草业工程学院新疆草地资源与生态重点实验室,新疆乌鲁木齐830052 [2]新疆昭苏马场草原站,新疆伊犁835602

出　　处：《草业科学》2008年第4期141-144,共4页Pratacultural Science

基　　金：新疆现代化畜牧业试验与示范项目"伊犁州生态经济型高效草业;畜牧业试验研究"

摘　　要：通过在昭苏马场设置的轻度放牧、中度放牧、重度放牧和极度放牧4个水平模拟放牧的测定,对针茅Stipa capillata的再生速度、再生草产量和再生速率的变化进行了研究。结果表明,随着放牧时间的变化,针茅的再生速度、再生草产量和再生速率都在减小。再生期间和放牧强度对针茅的再生草产量和再生速率的影响均达到了极显著水平(P<0.01)。在春季利用时随着放牧强度的增加,中度放牧下针茅的再生速度最快,再生草量和再生速率最大。Four levels of simulate grazing intensity （light, moderate, high and extreme） were designed in Zhaosu Horse Farm to study the effect of simulate grazing intensity on regrowth capability of Stila capillata in terms of variation in regrowth speed, regrowth biomass and rate. The result showed that with the grazing season change, regrowth speed, regrowth biomass and regrowth rate of S. capillata was reduced. The effect of regrowth duration and grazing intensity on regrowth biomass and regrowth rate was significant. In spring, with the increasing grazing intensity, regrowth speed was the highest under moderate grazing with the highest biomass and regrowth rate.

关 键 词：放牧强度 针茅草地 再生性 

分 类 号：S543.9[农业科学—作物学]