钾肥对杂交油菜产量和生物学性状的影响  

The Effects of Potassium Fertilizer on the Yield and Biological Characteristics of Hybrid Rape

作　　者：陈志雄[1] 魏生广[1] 尹兴祥 黄国贤[1] 罗有兴 

机构地区：[1]德宏州农业技术推广中心,云南德宏678400 [2]陇川县农业技术推广中心,云南陇川678700 [3]陇川县户撒乡农业综合服务中心,云南陇川678700

出　　处：《作物杂志》2012年第1期65-67,共3页Crops

基　　金：中央财政支持项目(2009330);云南省现代农业油菜产业技术体系资金项目

摘　　要：为研究钾肥对油菜的影响及经济施用量,进行在氮磷硼肥配合施用下,10个不同钾肥施用水平试验。结果表明,施用适量钾肥能显著增加产量,促进油菜生长发育,降低一级分枝部位、增加分枝数、单株角果数、每角粒数。施钾比对照增产油菜籽60～720kg/hm2,增产幅度在3%～32%,平均增产率14%,平均增纯利润667元/hm2,产投比平均达1.85,钾肥偏生产力和农学利用率平均分别为19.2kg/kg和2.17kg/kg。钾肥施用量165kg/hm2可以达到产量、经济效益最大化。In order to study the effects of potassium fertilizer on rape and application of nitrogen and phosphorus fertilizer in an economic way, application of potassium fertilizer at 10 different levels was conducted, with the coordinate application of phosphorus, nitrogen and boron fertilizer. The results indicated that the potassium fertilizer application of appropriate amount could significantly increase the yield, promote the growth and development of rape, reduce the height of the branching sites, and increase the number of branches, number of pods each individual, and grains per corner. In comparison with the controll, potassium fertilizer application could increase the production of rape seed by 60 -720kg/hm2, with the yield increase rate varying from 3% to 32%, averaged at 14%. The net profit increased by 667 RMB/hm2 by average, and the average ratio of output to input could reach 1.85. Average partial productivity of potassium fertilizer and average rate of its agricultural utilization were 19.2g/kg （K2O） and 2. 17g/kg（ K2O ）, respectively. The yield and economic benefit would be maximized when the apphcation of potassium fertilizer reached 165kg/hm2.

关 键 词：杂交油菜 钾肥 产量 生物学性状 

分 类 号：S565.4[农业科学—作物学]