氮磷钾硼配施对油菜泌蜜量的影响

采用四因素五水平二次正交旋转回归试验方法，在影响甘蓝型中熟品种油菜泌蜜量的施肥诸因素中，选择氮、磷、钾、硼的施用量作为生产上的决策变量，以油菜的泌蜜量为目标函数，所得结果通过计算机数据分析，建立了二次回归数学模型。对模型的主效应和交互效应的分析结果表明，磷素和钾素是影响油菜泌蜜量的主要控制因子；根据试验结果筛选出油菜泌蜜量的最佳施肥方案N 150 kg/hm2，P2O5 126 kg/hm2，K2O 157.5 kg/hm2和H3BO3 7.5 kg/hm2。

Influences of nitrogen,phosphorus,potassium and boron combined application on the nectar production of oilseed rape (Brassica campestris L.)

Regression method of orthogonal rotation combination with 4 factors and 5 levels was employed to study the influences of N, P, K and B combined application on nectar production of oilseed rape. Among the factors influencing oilseed rape nectar production, application rates of N, P, K, B were chosen as the variants for decision–making in production, and nectar production was adopted as the target function. The data obtained was analyzed with the computer and quadratic regression model was established. Analysis of the main effect and reciprocal effects of the model showed that the rates of P, K were the main dominate factors influencing the nectar production. The optimal fertilization rate for high nectar production was recommended as N 150 kg, P₂O₅ 126 kg, K₂O 157.5 kg and H₃BO₃ 7.5 kg per hectare in our study condition. The results provide the basis for the optimal combination in fertilization practice for the purpose of high nectar production.