【摘 要】
：
用二次回归正交旋转组合设计研究了不同播种期、栽播密度和施氮量对杂交中稻产量的影响。利用电子计算机模拟、寻优及综合评定,获得了平丘区杂交中稻亩产>550公斤的最佳农艺
【机 构】
：
四川省农业科学院水稻高梁研究所,四川省农业科学院水稻高梁研究所
论文部分内容阅读
用二次回归正交旋转组合设计研究了不同播种期、栽播密度和施氮量对杂交中稻产量的影响。利用电子计算机模拟、寻优及综合评定,获得了平丘区杂交中稻亩产>550公斤的最佳农艺措施组合方案:播种期为3月16～20日,栽插密度1.76～2.01万穴/亩,施氮量6.57～8.97公斤/亩。
The quadratic regression orthogonal rotation combination design was used to study the effects of different sowing dates, planting density and nitrogen application rate on the yield of mid-season hybrid rice. Using computer simulation, optimization and comprehensive evaluation, we obtained the best agronomic measures for per mu> 550 kg per acre of hybrid rice in Pingqiu area: sowing date is from March 16 to 20, planting density is 1.76 to 20.01 / acre , Nitrogen fertilizer 6.57 ~ 8.97 kg / mu.
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