钾锰配施对旱地冬小麦的增产效应

Study on yield-increasing effect of potassium and manganese fertilizers cooperating application on winter wheat in Dryland

在豫西褐土区研究了钾、锰配施对旱地冬小麦的增产效应。结果表明 :钾、锰配施对旱地冬小麦有显著的增产效应 ,增产幅度为 6 .9%～ 2 5 .4 %;施用 0～ 112 .5 kg/ hm2 K2 O和质量分数为 0～ 0 .3%的 Mn SO4 ,小麦穗数、穗粒数、千粒重和产量均随钾、锰肥施用量的增加而增加 ;钾、锰肥的合理施用量为每公倾施钾 (K2 O) 75 kg,同时配合叶面喷施质量分数为 0 .2 %～ 0 .3%的锰肥 (分拔节期和灌浆初期 2次喷施 ,每次喷施液为 75 0 kg/ hm2 )

Yield increasing efflect of potassium (K) and manganese (Mn) fertilizers cooperating application on winter wheat in dryland at the cinnamon soil area in western Henan Province was studied.The results showed:(1) with the K and Mn fertilizers cooperating application on arid winter wheat,there was a significant effect of yield-increasing on winter wheat,which ranged from 6.9% to 25.4%.(2) the ears per hectare,grains per ear,weight per 1000 grain,and the yield per hectare were increased with the increasing K and Mn fertilizers cooperating application in the ranges of 0-112.5 kg/hm 2 K 2O and 0-0.3% (mass ratio) MnSO 4.(3) the reasonable rate of K fertilizer (K 2O) application is 75 kg/hm 2 and that of foliage dressing of Mn fertilizer ranges from 0.2%-0.3%.