氮磷钾肥配施对大白菜产量和品质的影响  

Effects of combined application of N,P and K on the yield and quality of Chinese cabbage

作　　者：黄立华[1] 刘颖[2] 周米平[1] 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118 [2]长春税务学院计算机系,吉林长春130081

出　　处：《西北农林科技大学学报（自然科学版）》2005年第10期51-56,共6页Journal of Northwest A&F University(Natural Science Edition)

基　　金：吉林省科技厅项目(980202-03)

摘　　要：采用二次饱和D-最优回归设计(311B方案),对氮磷钾配施与绿星80大白菜的产量、Vc含量、硝酸盐含量的关系进行了研究,并建立了回归模型.结果表明,绿星80大白菜的氮磷钾最佳施肥量为纯N 245～265 kg/hm2,P2O5 158～188 kg/hm2,K2O 150～165 kg/hm2;N,P2O5和K2O的质量配比为1∶0.68∶0.62;此时用回归模型预测的大白菜产量为119 620 kg/hm2,Vc含量为272.14 mg/kg,硝酸盐含量为1 051.67 mg/kg.An optimal regression design with quadratic effects of N,P and K fertilizers on the yield and quality saturation D （31113 project） was adopted to find of Chinese cabbage through building the models which can demonstrate the relations of fertilization and the yield,vitamin c,nitrate content. The optimum combination of the three fertilizers on the Blue Star 80 Chinese cabbage was shown as the range of N （245-265） kg/hm^2＋P2O3（158-188） kg/hm^2-l-K2O （150-165） kg/hm^2,N：P2O5： K2O=1： 0.68 ： 0. 62.On these conditions,the forecasted yield was 119 620 kg/hm^2,the forecasted content of Vc 272.14 mg/kg and the forecasted nitrate content 1 051.67 mg/kg.

关 键 词：大白菜 配方施肥 数学心归模型 硝酸盐 交互作用 

分 类 号：S634.106[农业科学—蔬菜学]