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本试验对夏播玉米京科308在北京平原地区的种植密度和氮肥施肥量做了初步探讨,试验得出该品种的最佳种植密度是7.5万株/hm2;最佳施氮量是225kg/hm2;每hm2平均产量达到9万339kg;每hm2纯效益7096.8元。
In this experiment, the planting density and nitrogen fertilizer amount of summer sowing Jingke 308 in Beijing plain area were studied. The optimum planting density of this variety was 75,000 / hm2. The best nitrogen application rate was 225kg / hm2; the average output per hm2 reached 90,339 kg; net profit per hm2 7096.8 yuan.