春甘蓝施用钾肥的增产效应研究  

Study on Effect of K Fertilizer Application on Yield Increase in Cabbage in Spring

作　　者：卢廷军[1] 李录久[2] 戚从清[1] 郭熙盛[2] 张祥明[2] 张琳[2] 

机构地区：[1]安徽省涡阳县农业技术推广中心,安徽涡阳233600 [2]安徽省农业科学院土肥所,安徽合肥230031

出　　处：《安徽农业科学》2008年第16期6853-6854,共2页Journal of Anhui Agricultural Sciences

基　　金：国际植物营养研究所(IPNI)中国项目部平衡施肥项目资助;安徽省人才基金项目资助

摘　　要：[目的]研究甘蓝高产的钾肥施用技术。[方法]以甘蓝品种“春甘8398”为试材,设置了2个氮肥（N）水平（225、300 kg/hm^2）和3个钾肥水平（0、225和338 kg/hm^2）共5个处理。收获时调查了甘蓝的株高、叶片数、展开度、单球重、叶重、根重、单株生物量和净菜率。[结果]在施用氮磷肥的基础上增施钾肥,能明显促进春甘蓝的生长发育。施钾量在338 kg/hm^2以下时,株高、单球重、根重、生物量和净菜率随着钾肥施用量的加大逐渐增加。1999年施钾平均增产33.8%,2001年施钾平均增产27.7%。施用钾肥处理平均增收2 190-3 090元/hm^2,施用钾肥的产投比达3.85-5.19∶1。[结论]施用钾肥能大幅度提高甘蓝产量与经济效益。[ Objective ] The study was to investigate the technique of K fertilizer for high yield in cabbage. [ Method] With the cabbage variety Chungan 8398 as tested material, 5 treatments of N fertilizer with 2 levels （225, 300 kg/hm^2） and K fertilizer with 3 levels （0, 225 and 338 kg/hm^2） were designed. The plant height, number of leaf, degree of outspread, weight per ball, leaf weight, root weight, biomass yield per plant and net vegetable rate were measured in harvest stage. [Result] Applying K fertilizer on the base of N and P fertilizers could significantly increase the growth of cabbage in spring. When K fertilizer was applied below 338 kg/hm^2, the plant height, weight per hall, root weight, biomass yield per plant and net vegetable rate were increased with the increment of K fertilizer dosage. The average yield in treatment applied K fertilizer was increased by 33.8% in 1999 and by 27.7% in 2001. The treatment of applying K fertilizer could increase 2 190- 3 090 yuan/hm^2 in average and make the output-input ratio of 3.85 - 5.19：1. [ Conclusion] Applying K fertilizer could greatly increase the cabbage yield and economic benefit.

关 键 词：甘蓝 钾肥 产量 

分 类 号：S143.3[农业科学—肥料学]