论文部分内容阅读
采用多元二次正交旋转回归设计 ,研究了密度、N肥用量 (包括P、K肥 )、化控 (DPC用量 )、整枝 (留叶枝的二级果枝数 )对标杂A1 产量的综合效应。结果表明 ,欲使标杂A1 获得高产 ,应以适当降低密度 ,增加施肥量 ,力争提高铃数为主攻方向。经皮棉产量≥ 2 1 0 0kg/hm2决策因素频率分析 ,置信区 95 %的农艺决策措施为 :密度 2 .1 5 1～ 2 .3475万株 /hm2 ;每公顷施纯N 441～ 463.0 5kg(P2 O52 4 5 .4～ 2 67.45kg ,K2 O 2 4 5 .4～ 2 67.45kg) ,用DPC 5 7.45～68.5 5g ,留二级果枝 1 2 .5 5～ 1 3.9个 /株
Using multivariate quadratic orthogonal rotation regression design, the effects of density, amount of N fertilizer (including P and K fertilizer), chemical control (DPC dosage) and pruning . The results showed that if we want to make the high yield of Biaa A1, we should reduce the density, increase the amount of fertilizer, and strive to improve the boll number as the main direction. Frequency analysis of the decision-making factors of percutaneous cotton yield ≥210kg / hm2, 95% of the confidence area agronomic decision-making measures are: Density 2.151 ~ 2.3475 million / hm2; N 441 ~ 463.0 5kg per hectare P2 O52 4 5 .4 ~ 2 67.45 kg, K2 O 2 4 5 .4 ~ 2 67.45 kg), with DPC 5 7.45 ~ 68.5 5g, leaving the secondary fruiting branches 12.55 ~ 1 3.9 / plant