ABSTRACT

In an 8-year study, the influence of integrated fertilization (combination of organic and inorganic fertilizers) on maize (Zea mays L.) yield and nutrition, with respect to nitrogen, phosphorus and potassium, at the different growth stages, was investigated in Quzhou County of the North China Plain. Three treatments were chosen for this study: inorganic fertilizers without organic fertilizers (IF), inorganic fertilizers plus low organic fertilizers (LOF) and inorganic fertilizers plus high organic fertilizers (HOF). The results showed that integrated fertilization significantly improved maize grain yield; the magnitude of increase in maize grain yield with HOF and LOF was 1.52 and 0.74 t ha⁻¹, respectively, over the IF (9.20 t ha⁻¹). The total plant biomass and uptake of nitrogen, phosphorus and potassium in maize plants across growing stages were significantly improved with integrated fertilization. The integrated supply of nutrients was also beneficial in improving soil organic carbon, total nitrogen, available phosphorus and exchangeable potassium over the years. The result suggests that nutrient management practices for maize cultivation in the North China Plain should preferably include the integrated use of organic and inorganic fertilizers (3.75 t ha⁻¹ organic fertilizers supplemented with 125 kg N ha⁻¹) to increase soil fertility and maize yield.

摘要

在一项为期 8 年的研究中，综合施肥（有机和无机肥料的组合）对玉米 ( Zea mays L.) 产量和营养的影响在不同生长阶段就氮、磷和钾进行了研究。华北平原衢州县。本研究选择了三种处理：无机肥不加有机肥（IF）、无机肥加低有机肥（LOF）和无机肥加高有机肥（HOF）。结果表明，综合施肥显着提高了玉米籽粒产量；与HOF和LOF玉米籽粒产量增加的幅度为1.52和0.74吨公顷^-1，分别比IF（9.20吨公顷^-1）。综合施肥显着提高了整个生育期玉米植株的总植物生物量和氮、磷和钾的吸收量。多年来，养分的综合供给也有利于提高土壤有机碳、全氮、有效磷和可交换钾。结果表明，华北平原玉米种植的养分管理措施应优先包括有机和无机肥料的综合使用（3.75 t ha ^-1有机肥辅以125 kg N ha ^-1），以提高土壤肥力和玉米产量。 .