1．1草食动物与草地之间的关系 植物一食草动物系统也可称为放牧系统（grazing system），它有两个基本类型，即相互作用的（interactive）和非相互作用的（non-interactive）【3】。
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interactive grazing system 相互作用的放牧系统
Beef Cattle Grazing System 肉牛放牧系统
semi-intensive grazing system [畜牧] 半集约式放牧制
leader and follower grazing system 先后放牧系统
intensive grazing system 集约式放牧 ; 集约放牧制度
Rotational Grazing and Grazing System 轮牧放牧制度
sheep grazing system 绵羊放牧系统
grassland grazing system 草地放牧系统
A rational grazing system(GS)is the prerequisite for utilizing grassland properly and giving full play to the potential of grassland resources.
合理的放牧制度是对草地进行合理利用，充分发挥草地资源潜力的前提。
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 diurnal ruminating difference between different seasons was the result of the effect, which was caused by the climatic factor, grass condition, and the grazing system.
日反刍行为的季节间差异是由气候、草地状况和放牧制度共同影响的结果。
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