In order to find appropriate nutrient solution concentration under water culture condition for Chinese chives and study its effect on the growth,yield and quality,5 levels nutrient concentrations(0.5 C、1.0 C、1.5 C、2.0 C、2.5 C)were set up on normal nutrient solution base.The results indicated that the plant height,leaf length and width,number of leaf blade,cauloid thickness and root activity indexes all showed the tendency of decreasing first then increase.While,vitamin C,soluble sugar,soluble protein,etc.quality indexes increased first then decreased.Nitrates and nitrite concentration of 0.5 C were the highest.The yield of Chinese chives treated by 0.5 C was the highest reaching 73.86 t·hm-2,and the contents of nitrate and nitrite were the lowest.Thus,0.5 C is the appropriate nutrient solution concentration for Chinese chives under hydroponic culture.%在正常营养液基础上设置0.5倍(0.5 C)、1.0倍(1.0 C)、1.5倍(1.5 C)、2.0倍(2.0 C)、2.5倍(2.5 C)5个梯度,研究韭菜水培条件下适宜的营养液浓度及其对韭菜生长、产量和品质的影响.结果表明,随着营养液浓度的增加,韭菜株高、叶长、叶宽、叶片数、假茎粗和根系活力均呈先降低后升高的趋势;VC、可溶性糖、可溶性蛋白等品质指标呈先升高后降低的趋势.0.5 C处理的韭菜产量最高,为4924.14 kg·(667 m2)-1,且硝酸盐、亚硝酸盐含量最低,是水培韭菜适宜的营养液浓度.
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