钾锰配施对旱地冬小麦的增产效应

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 )

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

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%.