The use ratio of herbage was higher in the early grazed paddocks than that in the later grazed ones, but the productivity of the vegetation showed an opposite trend.

• 家畜对早放牧小区的牧草利用率高于晚放牧的小区,草地生产力则表现出相反的趋势。对于可利用牧草营养,早放牧的小区可提供较多的粗蛋白。