花生间作大葱条件下氮磷钾肥配施效应的研究

Study of the Effect of Nitrogen,Phosphorus and Potassium Fertilizer Combined Application on the Yield of Peanut Intercrop Scallion

采用“3414”肥料试验，探索花生间作大葱条件下氮磷钾配施效应，经过肥料效应函数拟合，研究了氮磷钾肥不同比例配合施用对花生间作大葱产量的影响，研究结果表明：氮磷钾肥配施能显著提高大葱产量，在一定范围内随着施氮量的增加大葱的产量升高，各施肥处理产量比不施肥处理增产5．50％-82．00％；同时，氮磷钾肥配施能够显著提高花生产量，各施肥处理产量较不施肥处理增产22．83％-48．73％，氮磷钾3种肥料对花生产量的效应函数拟合性较好。综合3类7种肥料效应函数，在花生间作大葱条件下高产推荐施肥量为：N 157．2kg／hm^2、P2O5 143．1kg／hm^2、K2O 125．8kg／hm^2，肥料用量比例为N：P2O5：K2O是1．25：1．14：1。

Effect of nitrogen, phosphorus and potassium fertilizer combined application on the yield of peanut intercrop scallion was studied in order to obtain optimum ratio of three kinds of fertilizers using ＂3414＂ fertilizer experiment design through fertilizer effect functions fitting. The result showed that： the application of fertilizer could improve the yield of scallion, the yield of scallion is increased along with the application of nitrogen fertilizer in a certain range, the yield of scallion could be improved by5.50% - 82.00%. Combined application of nitrogen, phosphorus and potassium fertilizer could improve the yield of peanut significantly by 22.83% - 48.73% , Fertilizer effect functions of N, P and K to peanut yield fitting well. Combined all the three seven fertilizer effect functions obtained in this experiment, the dosage of 157.2,143.1,125.8kg/hm^2 for N, P2O5 and K2O （ N ： P2O5 ： K2O = 1.25 ： 1.14 ： 1 ） was optimum ratio of the three kinds of fertilizers for peanut intercrop scallion fertilization in order to get maximum grain yield.