潮汐灌溉高度对阳台多层栽培叶用莴苣(生菜)生长和品质的影响

摘要

This experiment adopted multilayer ebb and flow irrigation equipment,and studied the effects of different ebb and flow irrigation height in rock wool on growth,yield and quality of lettuce in multilayer cultivation. The results showed that when the irrigation height was 2 cm,lettuce had the largest number of leaf blades,and the dry weight overgoroun and single plant yield were significantly higher than that of the other treatments.The contents of VC,soluble protein and chlorophyll were the highest.When the irrigation height was 3 cm,the plant height were significantly higher than that of the other treatment.When the irrigation height was 4 cm,the nitrate nitrogen content was the lowest.In conclusion,when the experimental conditions were as following:irrigation interval time was 1 h,hold time was 3 min and irrigation height was 2 cm,the comprehensive quality of lettuce was the best,and its yield was the highest.%采用多层潮汐灌溉设备,研究不同潮汐灌溉高度对多层岩棉基质栽培叶用莴苣(生菜)生长、产量和品质的影响.结果表明:灌溉高度为2 cm时,生菜的叶片数最多,地上部干质量和单个设备产量显著高于其他处理,VC、可溶性蛋白和叶绿素含量最高;灌溉高度为3 cm时,生菜的株高显著高于其他处理;灌溉高度为4 cm时,生菜的硝态氮含量最低.综合来看,在灌溉间隔时间1 h,灌溉维持时间3 min的试验条件下,灌溉高度为2 cm时生菜综合品质最优,产量最高.