气雾栽培法生产脱毒马铃薯营养液配方的筛选

摘要

Aeroponics may be one of the best cultivation patterns to solve the water and gas contradiction in roots of potato plants. Nutrient solution is the kernel in the aeroponics. Most of the nutrient solutions are based on MS medium, and adjustment of the proportion of N, P and K. This research studied the effects of different nutrient solutions in aeroponics on the yield, growth traits and postharvest loss in seed potato production. In this experiment, the treatment5[Ca(NO3)2·4H2O718mg/L,NH4NO3296 mg/L, KNO3 455 mg/L, KH2PO4 254 mg/L, K2SO4 257 mg/L, MgSO4·7H2O 554 mg/L] was found optimal for potato growth in terms of the stem diameter, stolon number, stolon length, number of tuber per plant, and percentage of minituber more than 6 g.%气雾栽培法是解决根系水气矛盾最好的一种栽培形式，营养液是气雾栽培的核心。已知的营养液配方多是以MS营养液为基础，改变营养液中N、P、K的比例而形成的。本试验研究了不同营养液对气雾栽培法马铃薯微型薯产量、生长性状及采收后损失率的影响，以期筛选出雾培条件下生产马铃薯微型薯适宜的营养液配方。结果表明，处理5，即配方Ca(NO3)2·4H2O 718 mg/L，NH4NO3296 mg/L，KNO3455 mg/L，KH2PO4254 mg/L，K2SO4257 mg/L， MgSO4·7H2O 554 mg/L在茎粗、匍匐茎数量与长度、单株结薯数及＞6 g微型薯所占的比例方面表现明显优于其他处理。