The experiment used the main summer maize variety Denghai 605 as the test object,in order to explore the effect of different fertili-zation treatments on soil physicochemical properties,nitrogen,phosphorus and potassium contents in straw and grains,corn yield and econom-ic coefficient,and calculated the utilization rates of nitrogen,phosphorus and potassium fertilizers for summer maize.The results showed that different fertilization treatments reduced soil pH and organic matter,alkalihydrolyzed nitrogen,and available phosphorus;total nitrogen,phos-phorus,and potassium increased the yield of summer maize grains and straw,as well as the nutrient absorption of grains and straw.In this ex-periment,the utilization rate of nitrogen fertilizer,phosphorus fertilizer and potassium fertilizer were 32.96%,14.25%and 41.67%,respec-tively,and the utilization rates of comprehensive fertilizer was 40.34%.Economic coefficient of maize was 0.47-0.51.
Summer maizeUtilization rate of fertilizerYieldEconomic coefficient
国家科技期刊平台
NSTL
万方数据
