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.
出处
《贵州农业科学》
CAS
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 ) ]
关键词
大白菜
黄泥土
氮
钾
硫肥
硝酸盐
产量
配合施肥
Chinese cabbage
yellow upland soil
nitrogen
potassium
sulphur
nitrate
