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采用单因素随机区组设计,对洛单6号进行了密度试验,结果表明:该品种对密度具有广适性,适宜种植密度在5.25万~6.75万株/hm2。采用N、P、K三因素旋转组合设计,通过计算机模拟寻优,建立了洛单6号的产量—施肥量数学模型;分析了N(x1)、P(x2)、K(x3)的主效应及交互效应与产量的关系,它们对产量的影响为N>P>K。筛选出玉米产量≥10800kg/hm2的最优方案为:N393.15~399.15kg/hm2、P2O5171.90~175.05 kg/hm2、K2O167.25~174.60 kg/hm2,其比例为2.3∶1∶1。
The density of Luodan No.6 was tested by single factor randomized block design. The results showed that the variety had wide adaptability to density, and suitable planting density was 52500 ~ 67500 plants / hm2. The combination of N, P, K three-factor rotation was adopted to optimize the yield of the Luodan 6 by computer simulation. The mathematical model of the yield-fertilizer amount was established. The main distributions of N (x1), P Effects and interaction effects and yields, their impact on yield N> P> K. The optimal plan of screening maize yield≥10800kg / hm2 was: N393.15 ~ 399.15kg / hm2, P2O5171.90 ~ 175.05kg / hm2, K2O167.25 ~ 174.60kg / hm2, the ratio of which was 2.3:1:1.