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就不同性状对冬小麦产量的影响进行相关分析,得出:单株粒数、穗数、穗长、结实小穗数与籽粒产量呈极显著正相关,株高为显著负相关,而经济系数与产量也呈正相关,但不显著.选择冬小麦种植的主要栽培因素密度(x1)、施氮量(x2)、施磷量(x3)、施钾量(x4)作为决策变量,采用四元正交通用旋转组合设计建立了数学模型.由此确定产量大于461.33kg/0.0667hm2,各因素水平的最优组合为:密度31.35万粒/0.0667hm2,施氮量为纯N22.52kg/0.0667hm2,施磷量为P2O513.02kg/0.0667hm2,施钾量为K2O8.44kg/0.0667hm2.
The correlation analysis on the effects of different traits on the yield of winter wheat showed that there was a significant positive correlation between grain number per plant, spike number, spike length, number of spikelets and grain yield, but significant negative correlation between plant height and economic coefficient The yield was also positively correlated, but not significant.Collecting the main planting factors of winter wheat planting density (x1), nitrogen (x2), phosphorus (x3), potassium (x4) as the decision variable, quadratic orthogonal The general rotation combination design established a mathematical model, which determined that the yield was more than 461.33kg / 0.0667hm2. The optimum combination of each factor level was: density of 313,500 / 0.0687hm2, nitrogen content of pure N22.52kg / 0.0667hm2 The amount of phosphorus is P2O513.02kg / 0.0667hm2 and the amount of potassium is K2O8.44kg / 0.0667hm2.