氮磷钾施用量对水培生菜生长和品质的影响  

Effects of the amount of application of N,P,K on the growth and quality of lettuce

作　　者：杨小锋[1,2] 别之龙[1] 

机构地区：[1]华中农业大学园艺林学学院/园艺植物生物学教育部重点实验室,武汉430070 [2]三亚市南繁科学技术研究院,三亚572000

出　　处：《农业工程学报》2008年第S2期265-269,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家863项目(2007AA10Z226);国家自然科学基金项目(30500346)资助

摘　　要：为了研究氮磷钾施用量对水培生菜产量和品质的影响,采用三因素五水平二次通用旋转回归组合设计,建立了相应的数学模型。结果表明,氮磷钾三者对产量影响的大小顺序为:N>P>K,互作效应对产量影响的大小顺序为:NP>NK>PK;对生菜叶片中硝酸盐含量影响的大小顺序为:N>K>P,互作效应对硝酸盐含量影响的大小顺序为:NP>NK>PK;对可溶性蛋白含量影响的大小顺序为:N>K>P,互作效应对可溶性蛋白含量影响的大小顺序为:NK>NP>PK;对可溶性糖含量影响的大小顺序为:N>K>P,互作效应对可溶性糖含量影响的大小顺序为:NP>PK>NK;对维生素C含量影响的大小顺序为:N>P>K,互作效应对维生素C含量影响的大小顺序为:NP>PK>NK。当氮、磷、钾的浓度分别为3.07mmo1/L,0.582mmol/L和2.666mmol/L时生菜可以达到高产优质生产目标。The effects of N,P,K on the growth and quality of the lettuce were investigated by using the general quadratic rotatory regression and solution culture,and the mathematical models were established.The results show that the influence order of nitrogen,phosphorus,potassium on the yield of lettuce is N>P>K,and the interactive effects on the yield of lettuce is NP>NK>PK.To the nitrate content,the influence order is N>K>P,and the interactive effect order is NP>NK>PK.To the soluble protein content,the impact orders are N>K>P,and NK>NP>PK, respectively.To the soluble sugar content,the impact orders are N>K>P,and NP>PK>NK,respectively.To the vitamin C content,the impact orders are N>P>K,and NP>PK>NK,respectively.Lettuce production can achieve the high yield and quality goal as the concentrations of nitrogen,phosphorus,and potassium are 3.07,0.582 and 2.666 mmol/L,respectively.

关 键 词：水培生菜 生长 品质 氮磷钾 

分 类 号：S636.2[农业科学—蔬菜学]