例句與用法

1. Influence of fencing and light grazing on enclosed alpine steppes in the qinghai lake area
   圍欄內禁牧與輕牧對高寒草原群落的影響
2. As a case study , the responses of leymus chinensis steppe of songnen plain in northeast of china to human being activity ( light grazing , middle grazing , heavy grazing and overgrazing ) were discussed based on the field observed data
   結果表明，隨著放牧強度的增加，羊草草原的植被蓋度和生物量隨之降低，優(yōu)勢羊草群落將逐漸被鹽生植物所替代，群落結構趨于簡化，物種向旱生化和鹽生化演替。
3. The paper summarized the research for the effects of different grazing intensity on grazing behaviour , grazing grass species and productivity of sheep in recent years , the result showed that : there was a negative correlation between the live weight gain per sheep and the grazing intensity , but there was positive correlation between the live weight gain per hectare and the grazing intensity ; feeding intake of sheep decreased when the grazing intensity become heavier ; there was not significant effect of different grazing intensity on sheep breeding indexes ; as long with the grazing intensity become heavier , the feeding time of sheep increased while resting and idling time decreased , but feeding intake per hundred mouths and daily intake reduced while intake velocity increased ; sheep feeding adaptability is relative ; the light grazing was beneficial to promote mutton quality , but mutton quantity and gross economy benefit was low
   摘要根據近幾十年來放牧強度對綿羊放牧行為、采食植物組成和生產性能的影響進行了綜述，得出以下結論：綿羊的個體增重與放牧率之間呈線性負相關，而公頃增重與放牧率之間呈正相關；綿羊的采食量隨著放牧強度的加重而降低；放牧強度對母羊繁殖性能各指標影響差異不顯著；隨著放牧強度的加重，綿羊的采食時間增加，游走、反芻臥息時間減少；每百口采食量和日采食量減少，而采食速度增加；放牧綿羊的嗜食性是相對的；輕牧有利于提高肉的品質，但是產肉量低，總的經濟效益不高。