四川不同生态区双低油菜品种“川油18”高产综合栽培技术研究

Studies on synthetic technology for high-yield cultivation of double-low rape ‘Chuanyou 18’in different ecological regions in Sichuan

本研究采用多元二次回归正交旋转组合设计和计算机模拟寻优,通过定性分析和定量分析相结合、经验模型和数学模型相结合,建立了川北生态区、川西生态区、川中生态区油菜产量与移栽密度、施氮量和施磷量的数学模型,解析了决策变量的效应和交互作用,筛选出了最优组合方案和高产栽培模式。

In present experiment, a double-low rape variety ＇Chuanyou 18＇ （ Brassiar napus L. ） was used to establish its mathematical models for high yield cultivation in north, middle and west ecotopes in Sichuan. Models factors including transplanting density, amounts of nitrogen and phosphate were established by means of a multiple quadratic regression with orthogonal rotational combination design. Computer simulation and optimization were conducted with quantitative and qualitative analyses.The main and interacfional effects of agronomic practices were analyzed.The best combinational schemes and high-yield cultivation models were proposed.