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为探讨超高产栽培条件下农大108玉米新品种适宜的种植密度和对氮、磷、钾的需求状况及最佳配比,为搞好良种良法配套技术提供理论依据,于 1999～2000年在实施超高产多抗玉米新品种中试基地开发与生产示范课题过程中,连续2a进行了农大108超高产栽培密度及氮磷钾肥配施试验研究,取得了初步成果。1 试验设计与方法1.1 试验地条件试验地系中壤土,地势平坦,土质肥沃。前茬作物小麦产量450kg/667m~2。土壤有机质 1.18%,全氮0.082%,碱解氮102.5mg/kg,速效磷20.2mg/kg,速效
In order to explore the suitable planting density and the demand status and the best ratio of nitrogen, phosphorus and potassium for Nongda 108 new maize varieties under the condition of super high yielding cultivation, During the demonstration project of developing and producing pilot base of new high-yielding and multi-resistant maize cultivars, we conducted a series of experiments on the cultivation density, N, P and K fertilization of Nongda 108 in a row for consecutive two years and achieved the preliminary results. 1 Experimental design and methods 1.1 Experimental conditions to test the Department of loam, flat, fertile soil. Crop production of wheat crop before the 450kg / 667m ~ 2. Soil organic matter 1.18%, total nitrogen 0.082%, alkali hydrolysis nitrogen 102.5mg / kg, available phosphorus 20.2mg / kg, quick effect