氮磷钾配施对绿豆产量的效应研究

应用三因素五水平二次正交旋转组合设计,研究氮、磷、钾配施对绿豆的产量效应,并建立氮、磷、钾施用量与绿豆产量关系的肥料效应函数模型,以确定绿豆的最佳施肥方案。结果表明:三因素对绿豆产量影响的大小顺序为磷肥氮肥钾肥,且氮磷、磷钾的交互作用达显著水平,通过方程模拟寻优得出,绿豆产量大于1 200 kg.hm-2的施肥方案:N施用量91.0~94.4 kg.hm-2,P2O5施用量112.0~133.9 kg.hm-2,K2O施用量54.8~84.9 kg.hm-2,N∶P2O5∶K2O的比例为1.00∶1.33∶0.75。

Studies on the Effects of Application Ratios of Nitrogen,Phosphorus and Potassium on Yield of Mung Bean

Using the 3-factor-5-level quadratic rotational combination design,the effect of the compound of N,P and K fertilizer on the yield of mung bean was studied.And the fertilizer response models were established between the N,P and K fertilizer and yield of moung bean.Based on the model,the best fertilized plan was determined.The results indicated that the effects of N,P and K on the yield followed the order：P〉N〉K,and the interactive effects between N and P,P and K were significant.According to the model,the fertilized plans which the yield surpassed 1 200 kg·hm-2 were 91.0～94.4 kg·hm-2 N,112.0～133.9 kg·hm-2 P2O5 and 54.8～84.9 kg·hm-2 K2O.The ratios of N∶P2O5∶K2O was 1.00∶1.33∶0.75.