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以北京市平谷区玉米区域试验中的高产品种中单28、登海3691为材料,进行3个密度与3个氮素量的小区试验,得出以下结果:2个品种产量接近,中单28的植株性状表现更优。登海3691受倒伏的影响,各处理产量不明显,中单28对氮素量和种植密度处理产量明显。中单28最高产量组合为每667m2施氮量50kg,留苗3500株,产量658kg;最高效益组合为每667m2施氮量7.5kg,留苗3500株,产量604kg,效益540.06元。
Taking the high-yielding cultivars Zhongdan 28 and Denghai 3691 in the regional trial of corn in Pinggu District of Beijing as test materials, the plot test of three densities and three nitrogen contents showed that the yield of the two cultivars was close to that of Zhongdan 28 Plant performance better. Denghai 3691 affected by the lodging, the output of each treatment is not obvious, the single 28 on the amount of nitrogen and planting density treatment output is obvious. The highest yield combination of Zhongdan 28 was 50kg of nitrogen per 667m 2, 3500 of Rare Miao, yield 658kg; the highest benefit combination was 7.5kg of nitrogen per 667m 2, 3500 of Riaojiao, the yield was 604kg and the benefit was 540.06yuan.