蔬菜含有丰富的维生素、矿物质、碳水化合物、蛋白质等，是人们生活中必不可少的重要的植物性食品。随着社会经济的发展和生活水平的提高，蔬菜的无污染、安全优质得到研究者、生产者和消费者的重视。莴笋营养价值高，可一年四季栽培，是我国南北地区广泛栽培的蔬菜品种。为了筛选适合莴笋高产优质的缓释肥，通过盆栽试验研究了不同缓释肥（SR1、SR2、SR3、SR4）对莴笋的产量和品质的影响。结果表明，不同缓释肥处理莴笋产量间有显著差异，SR3处理莴笋产量最低，其余处理与该处理相比，莴笋产量增加 9.1%~12.7% ，以SR4＞SR2＞SR1。莴笋的叶绿素含量以叶绿素a＞叶绿素b，叶绿素a含量以SR3＞SR2＞SR4＞SR1，而叶绿素b和叶绿素a+b含量则以SR3＞SR2＞SR1＞SR4，叶绿素a/b以SR4＞SR3＞SR2＞SR1。莴笋的硝酸盐、可溶性糖和氨基酸含量以均SR1＞SR2＞SR3＞SR4，而不同缓释肥处理对莴笋维生素C 含量影响不大。综合莴笋产量和品质来看，4个缓释肥处理中，SR2处理为莴笋高产优质的最佳处理。

Vegetable is the indispensable and important foodstuff in our daily life because of its abundant vitamin, minerals, carbohydrate, protein, and so on. With the development of our society and rising of living standard, there is an increasing concern about the nutritive and safety quality of vegetables for researchers, producers and consumers. Lettuce with rich nutrients is broadly cultivated around the whole years in both north and south of China. In order to select best slow release fertilizer for high yield and good quality of lettuce, a pot experiment was conducted to study the effects of different slow release fertilizer (SR1, SR2, SR3, SR4) on the yield and quality of lettuce. There was significant difference between the yield of lettuce. The yield of lettuce is the lowest in SR3 treatmentand is increased by 9.1%~12.7% compared with SR3 treatment, andthe yield was in the order of SR4＞SR2＞SR1. The content of chla of lettuce was higher than that of chl b and the content of chla was in the order of SR3>SR2>SR4>SR1, but the content of Chlb and Chl (a+b) was SR3>SR2>SR1>SR4, and Chl (a/b) was SR4>SR3>SR2>SR1. The content of nitrate, soluble sugar and amino acids were in the order of SR1>SR2>SR3>SR4, the effect of different slow release fertilizer on the vitamin C of lettuce is not significant. Taking yield and quality into consideration, the optimum slow release fertilizer is SR2.