Influences of applying stalk compost on the nutrient of field soil and corn yield of black soil

With the application of decomposer，the corn stalks can be decomposed quickly The utilization of this kind of compost mixed with N，P，K chemical fertilizers can increase the soil organic content by 0．4g／kg in the top soil per year，and the contents of total N，available N，P and K by 0．18g／kg，9．93mg／kg，1.8mg／kg，4mg/kg，respectively The bulk density of top soil decrease by 0.02g／cm³ ．and the corn yield increase by 15.7％．