营养液添加NaCl对番茄果实品质和叶片氮代谢影响

摘要

以樱桃番茄金珠为材料,采用基质盆栽的方式,研究营养液添加NaCl提高EC值对基质盆栽番茄果实品质和叶片氮代谢的影响.结果表明:采用添加NaCl的方式提高营养液EC值栽培番茄,可提高果实可溶性固形物、维生素C和可滴定总酸含量,单果重下降.各指标中对维生素C含量影响最小；对第3穗果实影响大于第1穗和第2穗；营养液添加NaCl还提高了番茄叶片硝酸还原酶活性和可溶性蛋白含量,降低了硝态氮含量.%The study was conducted in a substrate culture with pots to investigate the effect of nutrient solution EC regulation on Lycopersicon esculentum ' Jinzhu' cherry tomato fruit quality and nitrate metabolism. The results showed that enhancing nutrient solution EC value by nutrient solution salt supplement could improve the soluble solid content, vitamin C content and titrable acid content. However, the effect on the vitamin C content was the least in all indexes. At the same time, influence on the third cluster fruit was bigger than that on the first cluster fruit or the second cluster fruit. Nutrient solution salt supplement also improved the nitrate reductase activity, soluble protein content, and decreased the nitrate concentration.