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采用二次饱和D回归最优设计 ,研究了杂交水稻超高产栽培密度与氮、钾肥施用的关系 ,建立了重穗型杂交水稻产量 (y)与密度与氮、钾施用的数学模型。在对模型解析的基础上 ,进行计算模拟研究和优化选择 ,提出了重穗型杂交水稻超高产栽培的密度与氮、钾用量施用技术方案 :单产≥ 70 0kg/6 6 7m2 ,6 6 7m2 栽插密度为 1 .34～ 1 .5 4万 ,施尿素 2 2 .0～ 2 5 .7kg、普钙33.3kg、氯化钾 1 4.9～ 1 8.6kg ;单产≥ 75 0kg/6 6 7m2 ,6 6 7m2 栽插密度为 1 .4～ 1 .6万 ,施尿素 2 5 .4～ 2 9.1kg、普钙 33.3kg、氯化钾 1 5 .6～2 0 .0kg;单产≥ 80 0kg/6 6 7m2 ,6 6 7m2 栽插密度为 1 .3～ 1 .7万 ,施尿素 32 .0kg、普钙 33.3kg、氯化钾 1 6 .4～ 2 2 .7kg。
Based on the optimal design of quadratic saturation D-regression, the relationship between the super high-yielding cultivation density and the application of N and K fertilizers was studied. The mathematical model of the yield and yield of heavy-panicle hybrid rice and the application of nitrogen and potassium was established. On the basis of the model analysis, the calculation and simulation research and the optimization and selection were made. The technical scheme of density and nitrogen and potassium application for super-high-yielding cultivation of heavy-panicle hybrid rice was put forward. The yield per plant was more than 70kg / 667m2 and 667m2 Insert density of 1.34 to 1.54 million, urea application 220 ~ 2.57kg, calcium 33.3kg, potassium chloride 1 4.9 ~ 1 8.6kg; yield ≥ 75 0kg / 6 6 7m2, 6 6 7m2 transplanted density of 1.4 to 1.6 million, urea 2.54 ~ 2 9.1kg urea, calcium 33.3kg, potassium chloride 1.56 ~ 2.0 0 .0kg; yield ≥ 80 0kg / 6 6 7m2, 6 6 7m2 transplanting density of 1.3 to 1.7 million, urea 32 .0 kg, calcium 33.3 kg, potassium chloride 16.4 ~ 22.7 kg.