摘要
以玉米登海605为试验对象,探讨不同施肥处理对土壤理化性状、秸秆和籽粒中氮磷钾含量、玉米产量及经济系数的影响,测算夏玉米氮肥、磷肥和钾肥的利用率.结果表明,不同施肥处理降低了土壤pH及有机质、碱解氮、有效磷含量;氮磷钾全量施肥提高了夏玉米籽粒和秸秆产量及籽粒和秸秆养分吸收量.夏玉米氮肥、磷肥和钾肥的利用率分别为 32.96%、14.25%、41.67%,综合肥料利用率为40.34%,玉米经济系数为0.47～0.51.
Abstract
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.
国家科技期刊平台
NSTL
万方数据