施肥量对醋糟基质栽培生菜的影响  

Effect of different fertilization amount on lettuce grown with vinegar residue substrate

作　　者：高蓓[1] 李萍萍[1] 赵青松[1] 王纪章[1] 郑洪倩[2] 

机构地区：[1]江苏大学江苏省现代农业装备与技术重点实验室,江苏镇江212013 [2]江苏省农业科学院原子能利用研究所,江苏南京210014

出　　处：《中国土壤与肥料》2012年第1期95-98,共4页Soil and Fertilizer Sciences in China

基　　金：国家星火计划项目(2010GA690001);江苏省农业三项工程项目[SX(2010)107]

摘　　要：研究了5种施肥量处理[正常施肥量的0(0 s)、1/8(1/8 s)、1/4(1/4 s)、1/2(1/2 s)和1(1 s)单位]对醋糟混合基质栽培生菜生长以及品质的影响。结果表明,1/4单位施肥量(1/4 s)处理下醋糟基质的pH和EC值变化较其他处理平稳。1/4单位施肥量(1/4 s)处理下生菜茎粗、产量、根鲜重、叶鲜重最大,而1个单位施肥量(1 s)处理下上述指标最小。对采收时生菜品质的分析表明,生菜叶片内的硝酸盐含量随着施肥量的增加而迅速上升,1个单位施肥量(1 s)处理下生菜叶片中硝酸盐和可溶性蛋白含量最高,1/4单位施肥量(1/4 s)处理下生菜叶片中可溶性糖含量最高。综合考虑产量和品质,采用1/4单位的配方(1/4 s)是适合醋糟基质栽培生菜的施肥配方。Effects of five different fertilizer amount treatments （0, 1/8, 1/4, 1/2, 1 units of normal fertilizer concentration） on the growth and quality of lettuce grown with vinegar residue substrate mixed with others were investigated. The re- suits showed that the 1/4 unit fertilizer amount treatment had smaller change range of pH and EC in the vinegar residue sub- strate than other treatments. At the same time, stem diameter, yield, root fresh weight, leaf fresh weight were the biggest in the 1/4 unit fertilizer amount treatment, whereas they were the least in the treatment of 1 unit fertilizer amount. The ni- trate content in the leaves increased significantly with the fertilizer amount, and the highest nitrate content and soluble pro- tein content were in the treatment of 1 unit fertilizer amount, while the highest soluble sugar content was in the 1/4 unit fer- tilizer amount treatment. Based on comprehensive consideration of yield and quality, it was suggested that 1/4 unit fertilizer amount treatment was suitable for lettuce grown with vinegar residue substrate.

关 键 词：施肥量 醋糟基质 生菜 

分 类 号：S636.2[农业科学—蔬菜学]