不同有机物添加的营养液对生菜生长的影响
Effects of different organic nutrient solution on the growth of lettuce
张兴洪 1季佳南 1刘灿光 1倪维晨2
作者信息
- 1. 江苏善港生态农业科技有限公司,江苏 苏州 215600
- 2. 南农大 (常熟) 新农村发展研究院有限公司,江苏 苏州 215500
- 折叠
摘要
试验以意大利耐抽薹生菜为试材,采用基质栽培的方式,研究添加不同有机物(尿素、腐殖酸、黄腐酸钾、EDTA-2Na(乙二胺四乙酸二钠))的营养液配方对生菜生长及品质的影响.试验结果表明,低浓度尿素替代无机营养液中的硝态氮能有效提升生菜地上部和地下部鲜重,更高浓度的尿素则会起抑制作用;添加50 mg·L-1 和 100 mg·L-1 的 EDTA-2Na可明显提升生菜中的可溶性糖含量;腐殖酸营养液和尿素替代 40%硝态氮处理均能有效提升可溶性蛋白含量.综合研究,用尿素替代 40%硝态氮处理可作为生菜水培的优化营养液配方.
Abstract
Using Italian bolting-tolerant lettuce as material,we studied the effects of organic nutrient solution formula with different organic substances(urea,humic acid,potassium fulvic acid,EDTA-2Na)on the growth and quality of lettuce by soil-less cultivation.The results showed that nutrient solution containing low concentration of urea could effectively increase the fresh weight of lettuce root,but nutrient solution containing higher concentration of urea could reduce it.Besides,adding 50 mg·L-1 and 100 mg·L-1 EDTA-2Na to the nutrient solution can obviously increase the soluble sugar content in lettuce.Both humic acid nutrient solution and urea replacing 40%nitrate nitrogen treatment can effectively increase soluble protein content in lettuce.To sum up,the best treatment is urea replacing 40%nitrate nitrogen in the nutrient solution with urea.
关键词
生菜/营养液/营养品质Key words
lettuce/nutrient solution/nutrient quality引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据