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为探求杂交小麦超高产栽培模式,运用农业生态学和统计学原理,采用三因子二次饱和D-最优设计方案,选取对小麦产量影响较大的播期x1、播量x2和施肥量x3为调控因子,以每hm2产量y为目标函数,研究小麦超高产栽培模式。结果表明:在试验设计条件下,影响小麦产量的3个生态因素权重依次为施肥量x3>播量x2>播期x1;目标产量为7 500～9 000kg/hm2时,杂交小麦高产的最佳农艺方案为:施肥量x3(纯N和P的质量,m(N)∶m(P2O5)=1∶1)为208.24～301.88kg/hm2,播量x2为218.28～301.29万粒/hm2,播期x1为10-04—10-19。
In order to explore the super-high yielding cultivation mode of hybrid wheat, using the three-factor secondary saturation D-optimal design scheme, using agroecology and statistical principle, the sowing date x1, sowing amount x2 and fertilizer amount x3 As a regulatory factor, yield y per hm2 as the objective function to study the super-high-yielding cultivation mode of wheat. The results showed that under the experimental design conditions, the weights of three ecological factors affecting the wheat yield were in the order of the amount of fertilizer x3> the amount of sowing x2> sowing time x1, and the target yield of 7 500-9000 kg / hm2 The agronomic scheme was as follows: the amount of fertilizer x3 (the mass of pure N and P, m (N): m (P2O5) = 1: 1) was 208.24-301.88kg / hm2 and the sowing rate was 218.28-30.012900 / Period x1 is 10-04-10-19.