According to dry-farming maize field in Shanxi province,field experiment of planted in deep loosening and zero tillage,made a clear result about the quantity indicator of soil bulk density and soil water storage capacity,also the effect on the maize productivity. The experiment showed,in middle Shanxi province,on dry-farming maize,this farming method can improve soil structure,enhance the capability of soil water storage,promote maize growth and raise maize yield; In 2008 and 2009,compared with UST,the 0- 6...