平衡施肥对山地红壤玉米产量及相关性状的影响  

Effects of K Fertilization on Yield and Agronomical Traits of Maize in Hilly Area with Red Soil

作　　者：吴杏红[1] 张国建[1] 郭云周 刘健香 杨袁刚[1] 杨瑞林[1] 李自强[1] 

机构地区：[1]云南农业职业技术学院,云南昆明650031 [2]云南省农业环境资源研究所,云南昆明650205

出　　处：《湖南农业科学》2011年第11期47-50,共4页Hunan Agricultural Sciences

基　　金：国际合作项目资助(NMS-YN200801);国际植物营养研究所资助

摘　　要：对玉米K肥平衡配方施用随机区组试验,研究和分析了不同平衡配方施K对云南红壤山地玉米产量及相关性状的影响。结果表明:施K量不同,处理间存在玉米株高、穗粒数、百粒重、单株产量、小区秸秆产量和子粒产量等方面差异显著,各处理的增产效应依次是2OPT+K>2OPT>2OPT-K>OPT>2OPT-2K>CK。The randomized block experiments were conducted to balanced K fertilization formula of maize, and the effects of different balanced K fertilization formulae on yield and relevant characters of maize in hilly area with red soil The resuhs showed that with different K fertilizer rates, the plant height, the grain number per spike, the 1000- grain weight, the yield per plant, the plot straw yield and the grain yield of maize all had significant differences among treatments; the yield increasing effect of each treatment ordered as 2OPT＋K〉2OPT〉2OPT-K〉OPT〉2OPT-2K〉CK.

关 键 词：红壤山地 K肥 玉米 子粒产量 农艺性状 

分 类 号：S513[农业科学—作物学]