An average summer output in excess of 900 kg . liveweight per ha. could not have been obtained if there had been a complete reliance on clover nitrogen.
要是完全依靠三叶草的氮,要在夏季获得每顷草900以上的活体重,是不可能的。
An average summer output in excess of 900 kg . liveweight per ha. could not have been obtained if there had been a complete reliance on clover nitrogen.
要是完全依靠三叶草的氮,要在夏季获得每顷草900以上的活体重,是不可能的。
Grazed on the shrubs, average liveweight gain of crossbred sheep increased range from 3.4% to 32.0%, wool production increased range from 20.0K to 79.3% and reproduction rates increased significantly.
灌丛放牧,杂交绵羊体重平均3.4%一32.0%,羊20.0%~79.3%,产羔率也有较大提高。
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