氮钾硫肥配施对大白菜产量和硝酸盐含量的影响  

Effects of Combined Application of N,K and S Fertilizers on Yield and Nitrate Content of Chinese Cabbage in Yellow Upland Soil

作　　者：肖厚军[1] 闫献芳[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》2001年第6期20-22,共3页Guizhou Agricultural Sciences

基　　金：贵州省自然科学基金资助项目 [黔基合字 (30 18号 ) ]

摘　　要：采用三因素五水平最优回归设计 ,研究了黄泥土配施氮钾硫肥对大白菜产量和硝酸盐含量的影响。结果表明 :黄泥土大白菜高产和低硝酸盐含量的最佳氮钾硫用量为 N 180～ 2 0 0 kg/ hm2 ,K2 O 12 0～15 0 kg/ hm2 ,S135～ 160 kg/ hm2 。An optimum regression design with three factors and five levels was adopted to find the effects of N,K and S fertilizers on the yield of Chinese cabbage and the nitrate content in its plant.The optimum combination of the three fertilizers was shown as the range of N(180～200)kg/ha十K 2O(120～150)kg/ha+S(135～160)kg/ha,which gave high yield of the crop with a low content of nitrate.

关 键 词：大白菜 黄泥土 氮 钾 硫肥 硝酸盐 产量 配合施肥 

分 类 号：S634.106.2[农业科学—蔬菜学]