汉油9号的高产优化栽培模式

采用五元二次正交旋转组合设计,研究播期、密度、氮肥、磷肥、钾肥对汉油9号产量的影响.结果显示,各栽培因子对汉油9号产量影响的大小顺序为：施氮量＞施钾量＞播期＞磷肥＞密度.用降维法分析各因素与产量的关系,结果表明,每公顷施纯氮167.85 kg产量最高,每公顷施纯磷96.6 kg产量最高,每公顷施纯钾75.6 kg产量最高;播期为9月11日产量最高,密度为12.3万株·hm^-2时产量最高;经过计算机模拟寻优,产量大于3 150 kg· hm^-2栽培方案有93套,相应的农艺措施为播期9月9-11日,密度11.70～12.30万株·hm^-2,纯氮量174 ～186 kg· hm^-2,纯磷量为85.95 ～94.05 kg· hm^-2,纯钾量为84.90 ～95.10 kg·hm^-2.

Optimum Cultivation Patterns of Hanyou 9

An experiment was made to optimize cultivation of the rape Hanyou 9 （Brassica napus）, and a quad- ratic orthogonal rotation combination design with 5 factors including sowing date, density, supplement of nitro- gen, supplement of phosphorus, supplement of potash was arranged to observe the effect of the factors on the yield of Hanyou 9. The results showed that the 5 factors gave different effect on the yield of Hanyou 9 in the or- der of supplement of nitrogen 〉 potash 〉 sowing date 〉 phosphorus 〉 density. Analysis of the relationship be- tween the factors and yield showed that the rape yielded the highest when treated with nitrogen fertilizer at a rate of 167.85 kg · hm^-2, with phosphorus fertilizer at a rate of 96.6 kg · hm^-2, or with potash fertilizer at a rate of 75.6 kg · hm^-2, or in the sowing date of September 11, or with the density of 12.30 ten thousand plants · hm^-2. Computer simulation revealed that 93 optimal sets of cultural patterns gave rapeseed yield ≥3 150 kg · hm^-2, with their cultural measures being that the rape is planted at the density of 11.70 - 12.30 ten thousand plants · hm^-2, and applied with fertilizer of nitrogen at a rate of 174 - 186 kg · hm^-2, phosphorus at 85.95 - 94.05 kg · hm^-2, and potash at 84.90 -95.10 kg · hm^-2.