豫东潮土氮钾营养对强筋小麦干物质积累和产量的影响  

Effects of nitrogen and potassium application on dry matter accumulation and gain yield of strong gluten wheat in loamy fluvo-aguic soil

作　　者：王喜枝[1] 王立河[1] 曹雯梅[1] 王应君[1] 孙斌[1] 刘松涛[1] 王立秋[1] 

机构地区：[1]河南农业职业学院,河南中牟451450

出　　处：《中国土壤与肥料》2009年第4期64-67,共4页Soil and Fertilizer Sciences in China

基　　金：河南省科技攻关项目"小麦钾素营养与小麦品质关系的研究"(0324060018)

摘　　要：在豫东潮土区壤质土壤上，研究了在施用磷肥的基础上，施用氮肥和钾肥对强筋小麦干物质积累量、小麦产量的影响。结果表明，增施氮肥和钾肥都可以提高小麦干物质积累量，尤其在拔节至抽穗期单株干物质积累速度最快；N用量为282．5kg·hm^-2，K2O用量为270kg·hm^-2以时更有利于强筋小麦抽穗期对养分的需求；从产量上看，N 180～270kg·hm^-2，K2O 225～300kg·hm^-2为合适施肥量。The effects of combined application of different rates of nitrogen and potassium fertilizers on dry matter accumulation and gain yield of strong gluten wheat in loamy fluvo-aquic soil were studied. The results indicated that both nitrogen and potassium fertilizers increased the dry matter accumulation. Especially from jointing stage to earing stage, the dry matter accumulation rate was fastest. Application of N 282. 5 kg ·hm^-2 and K2O 270 kg ·hm^-2 was more conducive to strong gluten wheat in this period of nutrient demand. To obtain the maximum yield, the suitable applying rate of N within 180 -270 kg ·hm^-2 and K2O was 225 -300 kg ·hm^-2.

关 键 词：氮钾营养 强筋小麦 干物质积累 产量 

分 类 号：S512.1[农业科学—作物学]