“3414”试验对山地玉米产量影响及推荐施肥探索

摘要

应用“3414”试验对云南山地玉米进行养分试验，研究配施不同N、 P、 K养分对其产量的影响。结果表明：氮、磷、钾施用量对玉米产量的影响大小顺序为磷＞氮、钾，养分农学效率为K1＞K2＞P2＞P1＞P3＞K3＞N1＞N2＞N3；试验区域玉米最优推荐施用量为N 75 kg/hm2； P2O5150 kg/hm2； K2O 42.90 kg/hm2。%The “3414” experim ent was applied to nutrient experiment of mountain corn in Yunnan Province in order to study the effects of application of different nutrients (nitrogen, phosphorus and potassium) on yield. The results show that the effects of consumption of nitrogen, phosphorus and potassium on corn's yield are: the consumption of phosphorus > the consumption of nitrogen> the consumption potassium, in that order;the nutrient agronomic efficiency is: K1>K2>P2>P1>P3>K3>N1>N2>N3;the optimal recommended consumption of N, P2O5 and K2O of the corn in experimental area is N 75 kg/hm2, P2O5 150 kg/hm2, K2O 42.90 kg/hm2.