机译:Effect of Reducing Chemical Fertilizer on Rice Yield,Output Value, Content of Soil Carbon and Nitrogen after Utilizing the Milk Vetch紫云英利用后减施化肥对水稻产量、产值及土壤碳氮含量的影响
机译:减氮和施生物炭对华北夏玉米-冬小麦田土壤CO2和N2O排放的影响Effects of Reduced Nitrogen Fertilization and Biochar Application on CO2 and N2O Emissions from a Summer Maize-Winter Wheat Rotation Field in North China