Though measure the different harvest and soil depth to different alfalfa varieties

the result shows that Xixiang has obviously less soil water content than local variety Huining in different harvest and different depth. Most of them have a "V"change which is high-low-high.But soil depth in 60~80 cm and 80~100 cm

the change of soil water content is different. The soil water content of Xixiang isobviously affected by big and powerful root

big yield and rainfall.Xixiang can absorb water in more depth

and it has big potentiality to increasing production and sharp ability of resistance drought.