Effects of combination of organic and inorganic fertilizers on fertility and yield of winter wheat in fluvo-aquic soil
[Objective]To explore the effects of different fertilization on the fertility of wheat fields and nitrogen use efficiency and yield of winter wheat in the Huanghuaihai fluvo-aquic soil region in the hope of providing theoretical support and technical guidance for optimizing fertilization measures.[Methods]Based on the 12-year continuous fertilization treatment positioning experiment in Tianjin fluvo-aquic soil area,differ-ent fertilization treatments were set:including control(CK),single application of organic fertilizer(M),50%reduction of chemical fertilizer combined with organic fertilizer(MF1),conventional quantitative fertiliz-er combined with organic fertilizer(MF2)and single application of chemical fertilizer(F).[Results]The re-sults showed that,compared with the control,the fertilization treatments could significantly increase the soil organic matter and available nitrogen,phosphorus and potassium contents in wheat fields,and the combined application of organic and inorganic fertilizers had the best soil fertility improvement effect.Compared with the control,the soil organic matter increased by 92%,48%,78%and 20%,respectively in M,MF1,MF2.In terms of dry matter accumulation and yield,MF1 treatment significantly reduced leaf nitrogen content in booting-mature stage,promoted nitrogen transfer to grains,improved nitrogen use efficiency,and significantly in-creased the number of grains per ear and 1,000-grain weight,thereby increasing yield.The yields of MF1 and MF2 treatments reached 6,467and 6,345 kg/hm2,respectively,which were 12%and 9%higher than that of treatment F.[Conclusion]In conclusion,the combined application mode of chemical nitrogen fertilizer 115 kg/hm2 and organic fertilizer 15,000 kg/hm2 can reduce the chemical nitrogen input by 15%compared with the conventional mode,and keep the yield of winter wheat stable,which can be used as a recommended fertili-zation technology for winter wheat farmland in the fluvo-aquic soil area of the Huanghuaihai Plain.
winter wheatcombination of organic and inorganic fertilizersyieldnitrogen use efficiencysoil nutrientsdry matter accumulation
张钊、张贵龙、汤秋香、闫雪影、张艳军
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新疆农业大学农学院,乌鲁木齐 830052
农业农村部环境保护科研监测所,天津 300191
冬小麦 有机无机肥配施 产量 氮素利用率 土壤养分 干物质积累
国家自然科学基金项目中国农业科学院科技创新工程(农业农村部环境保护科研监测所)Chinese academy of Agricultural Sciences Innovation Program(Agro-Environmental Protection Institute)
国家科技期刊平台
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