超级稻D奇宝优527的高产综合配套栽培技术

以超级稻D奇宝优527为材料,运用多元二次正交旋转回归模型研究播种量、栽插密度、氮肥施用量、移栽期和钾肥施用量对其产量的影响,探索适合其高产的优化栽培技术组合方案.结果表明:纯氮量(X4)、移栽期(X2)、K2O用量(X5)对产量的影响达极显著水平,播种量(X1)、种植密度(X3)对产量的影响达显著水平,5个因子对产量影响的大小顺序为:纯氮量(X4)>移栽期(X2)>K2O用量(X5)>播种量(X1)>种植密度(X3).影响产量的各因子间,播种量(X1)与种植密度(X3)间呈极显著的正互作关系,氮肥(X4)与钾肥(X5)间呈极显著的正互作效应,经模拟统计得出其优化的栽培技术组合为:作为中稻种植,播种量336.5-383.5 kg.hm-2,3月25日播种,5月3-4日移栽,每公顷插植15.15-18.30万丛,施纯氮185.25-195.30 kg.hm-2,施K2O 129.15-141.45 kg.hm-2.

Comprehensive techniques for high yield cultivation of super hybrid rice D Qibaoyou 527

The effects of sowing rate,transplanting density,nitrogen and potassium supplies,transplanting period on the yield of D Qibaoyou 527 were studied with multiple-dimension regression rotation analysis.The result indicated that the effects of N supply(X4),transplanting period(X2),K supply were extremely significant,while the effects of sowing rate(X1),transplanting density(X5) were significant on the grain yield.The effects of five factors on yield were N supply >transplanting period(X2)>K supply>sowing rate>transplanting density.Among the five factors,the effect of sowing rate(X1) was positively correlated with transplanting density(X5),while the effect of N supply was positively correlated with K supply.The optimal combination of cultivation techniques was that: when D Qibaoyou 527 was used as middle rice,the sowing rate was 33.65-38.35 g·m-2,the day of sowing was March 25,the day of transplanting was May 3 or 4,the transplanting density was 15.15-1.83 clump·hm-2,the N supply was 185.25-195.30 kg·hm-2 and K supply was 129.15-141.45 kg·hm-2.