Abstract: After second general survey of soil,possessing the farmland of grass marshland investigation of representativeness to the Xiliaohe River alluvial plain,the result is confirmed,and after cultivating to plant,extensive owing to manage,not attaching importance to the farm manure＇s inputing,soil fertility descends clearly.And overemphasizes raise the output per mu,input to large numbers of urea and two ammoniums phosphoric acid,ignorance the potassium,make the large number of soil potassium lost,N、P2O5、K2O this three element＇s proportions lost the balance.Therefore we should use the balance technology spread manure from now,attach importance to the farm manure,and mend to bring into effect potash fertilizer,the appropriate ammount is used trace elements,popularize living things bacterical manure,and promotes the agriculture and animal husbandry＇s development of this district.