In the field and artificial simulation condition the experiment was conducted in order to raise the usage rate and translation efficiency of precipitation in droughtland. Results indicated that under the conditionwhen there is lack of water in the soil, deep ploughing will lead to decrease yeild before sowing, deep ploughing will aggravate the dispellingof the soil water when the field is fallow in the summer. Overburdenlayer 510 cm in the field can reduce eva pbration,at the same time,canraise soil temperature and increase the nutriment content in soil. It canincrease fertilizer of winter wheat and make the roots widedeveloped,toreduce freeze injury and increase grain yeild. To heighten fertility ofsoil, to use more manure and fertilizer can raise the translation efficiency of precipitation, change the potential of limited moisture to theproductivity of soil.