钾肥对提高花椰菜产量和品质的效应  

Effect of potash fertilizer on increasing yield and quality of cauliflower

作　　者：施振云[1] 施俭[1] 杨锋[1] 王德君 

机构地区：[1]上海市崇明县农业技术推广中心,上海202150 [2]上海市崇明县农业委员会蔬菜办,上海202150

出　　处：《土壤肥料》2004年第4期17-19,24,共4页Soils and Fertilizers

基　　金：崇明县科委<花椰菜高产优质栽培技术推广>项目的研究内容之一。

摘　　要：连续2年田间试验及大面积示范的结果表明,在花椰菜高产优质栽培中,配施钾肥能有效地增加花椰菜生物学产量,提高净菜率而获显著增产,较习惯的氮磷配施法增产13 3%;施用商品有机肥4500kg/hm2、纯N334 5kg/hm2、P2O5108kg/hm2条件下,K2O最适配用量为180kg/hm2;在等养分条件下,施用蔬菜专用肥的增产率可达19 4%;同时,配施钾肥可以提高花椰菜的品质和商品率,增加经济效益。The result of field experiment continuous for two-years and demonstration of big area in cauliflower showed that the best appropriate application amount of K_2O is 180 kg/hm^2 on condition that apply commercial concentrated organic fertilizer 4500 kg/hm^2, N334.5 kg/hm^2,P_2O_5 108 kg/hm^2. it's efficacious for increase biological yield and net vegetable rate thus to gain yield remarkably. Yield of cauliflower is higher by 13.3% than habitual combined N, P fertilization. And applying vegetable special fertilizer can increase production 19.4% under same nutrient condition. Combined application N, P and K fertilization can increase quality and merchandise rate or cauliflower also to increase economic benefits.

关 键 词：钾肥 花椰菜 产量 品质 

分 类 号：S635.306.2[农业科学—蔬菜学]