[目的]对临泽地区的荷斯坦奶牛春季SCC以及与产乳性能之间的相关性进行统计分析,以期为该地区的奶牛饲养提供理论基础数据参考.[方......

The issue of agricultural land sustainability is important to every part of the world, especially in the developing coun......

With the support of RS and GIS technology,the ecological environment of Linze was evaluated and the changes of ecologica......