through comparing effects between grazing systems and a feedlot system on the degenerated vegetation, the roles of rotational grazing system playing in vegetation recovery were investigated.
通过对比研究放牧制度及围栏封育对退化草地植被的影响,来探讨划区轮牧在退化草地植被恢复中的作用以及最优的放牧方式。
peak productions of stipa breviflora above-ground biomass under the two grazing system were simila, while the peak time was lagged in free stocking system.
轮牧与禁牧区短花针茅地上生物量积累峰值一致,自由放牧区短花针茅地上生物量积累峰值滞后。
selective grazing of the native cattle and sheep in inner mongolia under the continuous grazing system during may and december 19% and 1997 was studied.
1997年间,作者对自由放牧条件下放牧于沙地草地的蒙古牛和蒙古羊的选择性采食进行了观察研究。
the effects of the grazing system on physical characteristics of soil in northern rangeland and milky property of sanhe cow were mainly studied.
主要研究放牧制度对谢尔塔拉地区天然草地土壤物理性状以及对三河牛泌乳性能的影响。