杂交油菜新品种黔油14号高产栽培优化技术研究

Study on High-yield Cultivating Technique for Hybrid Rape Qianyou 14

采用二次通用旋转回归组合设计方案 ,研究黔油 14号产量与栽培密度、施肥量 (N、P、K)之间的关系 ,建立了各因素与产量指标间的数学模型 ,进而确立了黔油 14号 (黔杂 96 0 0 7)高产栽培合理密度和施肥量的优化方案是 :密度 10 .84～ 12 .4万株 /hm2 ;纯 N施用量 117.9～ 177.85 kg/hm2 (即尿素 2 5 6 .32～386 .6 4kg/hm2 ) ;P2 O5施用量 15 2 .16～ 171.84 kg/hm2 (即过磷酸钙 95 1～ 10 74 kg/hm2 ) ;K2 O施用量 2 34.6 3～30 5 .37kg/hm2 (即氯化钾 391.0 5～ 5 0 8.95 kg/hm2 )。其中 N∶ P2 O5∶ K2 O的最佳比例为 1∶ 1∶ 1.7。各因素对产量的影响依次是密度 >磷肥 >钾肥 >氮肥。

For seeking the high yield cultivating technique of rape hybrid Qianyou 14 quadratic rotational regression combination design was used to study quantity relation between yield and main cultivating technique(the density and amount of N,P,K ) also a mathematical model of the main factors and yield was established. And then the model made clear that the suitable cultivating technique norm of excellent combination for the high yield(more than 3000 kg/ha)were density 1.084～1.2405 ×10 5 plants/ha, amount of N: 117.9 ~177.85 kg/ha, P 2O 5 152.16~ 171.84kg/ha , K 2O 234.63～305.37kg/ha. The best ratio of N∶P 2O 5∶K 2O was 1∶1∶1.7.The factor order of influenceing on yield is the density>P 2O 5>K 2O>N.