| Based on the determination of soil moisture in farmlands in south of Xi’an and Chang’an,the changes of soil moisture from zero to six meters in different rainy year are studied in this paper.The results show that the soil moisture is higher than 12 percent from zero to two meters,soil moisture in farmland is normal.In plentiful rainy year,the soil moisture from zero to two meters is higher than 18 percent and the soil moisture from two to six meters is higher than 24 percent,which are higher than that of the layers in normal year.It shows that Xi’an district is the place suitable to the flat root crops. |