华杂四号油菜高产施肥模型研究

Study on fertilizer applying model of high yield for Rape Huazha No.4

采用正交回归旋转组合设计 ,研究了氮 (N) ,磷 (P2 O5) ,钾 (K2 O) ,硼肥 (B)施用量对华杂四号油菜产量的影响 ,建立了产量与施肥量回归模型 ,进行了施肥量主效应分析及互作效应分析 ,并对油菜产量最佳施肥水平进行模拟寻优 .结果表明 ,产量在 2 2 5 0kg·hm-2 以上时 ,最佳施N肥量为 192 0～ 2 0 4.4kg·hm-2 ,P肥量为 12 8 9～ 139.9kg·hm-2 ,K肥量为 119 1～12 7.6kg·hm-2 ,硼肥量为 14 96～ 15 .98kg·hm-2 ;产量在 2 40 0kg·hm-2 以上时 ,施N量为 194 1～ 2 2 5 .9kg·hm-2 ,P肥量为15 5 8～ 171.9kg·hm-2 ,K肥量为 10 1 5～ 12 5 .1kg·hm-2 ,硼肥量为 11 5～ 14.3kg·hm-2 .

By means of cross whirl regression design,studies were conducted on the effect of different application level of nitrogen,phosphorus,potassium and boron on the yield of Rape Huazha No.4 and the regression model was established between yield and fertilizer application level.The result indicated that when the production is over 2 250 kg·hm -2 , the optimal application level is 192.0～204.4 kg·hm -2 for nitrogen, 128.9～139.9 kg·hm -2 for phosphorus, 119.1～127.6 kg·hm -2 for potassium, 14.96～15.98 kg·hm -2 for boron;when the yield is over 2 400 kg·hm -2 , the optimal application level is 194.1～225.9 kg·hm -2 for nitrogen 155.8～171.9 kg·hm -2 for phosphorus 101.5～ 125.1 kg·hm -2 for polassium and 11.5～14.3 kg·hm -2 for boron.