氮钾硫配方施肥对萝卜产量和硝酸盐含量的影响  

Effects of Combined Application of N,K and S Fertilizer on Yield and Nitrate Content of Radish on Yellow Soil

作　　者：阎献芳[1] 肖厚军[1] 彭刚[1] 

机构地区：[1]贵州省农业科学院土壤肥料研究所,贵阳550006

出　　处：《贵州农业科学》2006年第B07期43-45,共3页Guizhou Agricultural Sciences

基　　金：贵州省自然科学基金资助项目[黔基1999(308)]

摘　　要：为使人们能够吃上健康的无公害食品，采用三因素五水平最优回归设计，探讨了氮钾硫配方施肥对黄泥土萝卜产量和硝酸盐含量的影响。结果表明，萝卜高产和低硝酸盐含量的最佳氮钾硫用量为N180～200kg／hm^2，K2O 120～150kg／hm^2，S135～160kg／hm^2。An optimized regression design with three factors and five levels was adopted to study the effects of N, K and S fertilizers on the yield and nitrate content of radish. The optimum combination of three fertilizers is N 180-200 kg/hm^2 ＋ K2O 120-150 kg/hm^2 ＋S 135-160 kg/hm^2 , which can get higher yield of radish with a low content of nitrate.

关 键 词：氮钾硫肥 黄泥土 萝卜 硝酸盐 

分 类 号：S631.1[农业科学—蔬菜学] S606.2[农业科学—园艺学]