我国当前许多农田缺磷少钾的情况相当严重,氮、磷、钾比例不协调,成为农业增产的主要障碍,因此必需通过施肥加以调节,而目前我国磷、钾肥的生产量还远远满足不了农业生产发展的需要。为了探讨有机肥、有机肥和氮肥配合施用对增加土壤中 At present, many fields in our country lack of phosphorus and potassium less, and the uncoordinated proportions of nitrogen, phosphorus and potassium are the main obstacles to increase agricultural output, so they have to be adjusted through fertilization. At present, the production of phosphorus and potash fertilizer in our country is far from sufficient The need of agricultural production development. In order to explore organic manure, organic manure and nitrogen fertilizer were applied to increase the soil