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以生菜为试材,在人工光环境条件下进行水培试验,在不同营养液浓度(山崎营养液配方0.8、1.0、1.2倍)和不同光照强度(80、130、180μmol·m~(-2)·s~(-1))处理组合下,测定了收获期生菜的产量和维生素C、硝酸盐、可溶性蛋白质以及可溶性糖等品质指标,研究了营养液浓度与光照强度处理组合对水培生菜产量和品质的影响。结果表明:1.0倍营养液与180μmol·m~(-2)·s~(-1)光照强度处理下生菜地上鲜质量最大、硝酸盐含量最低;1.2倍营养液与180μmol·m~(-2)·s~(-1)光照强度处理下生菜的可溶性糖含量最高;1.0倍营养液与130μmol·m~(-2)·s~(-1)光照强度处理下生菜的可溶性蛋白质、维生素C含量最高。综合考虑,1.0倍营养液与180μmol·m~(-2)·s~(-1)光照强度处理为水培生菜最佳处理。
Using the lettuce as the test material, the hydroponics experiment was carried out under artificial light environment conditions. Under the different nutrient solution concentration (0.8, 1.0 and 1.2 times of the Yamasaki nutrient solution formula) and the different light intensity (80, 130 and 180 μmol · m -2 ) · S ~ (-1)), the yield and the quality indexes of vitamin C, nitrate, soluble protein and soluble sugar of lettuce at harvest were measured. The effects of nutrient solution concentration and light intensity on the growth of lettuce The impact of yield and quality. The results showed that the fresh weight and the nitrate content of lettuce were the highest under the treatments of 1.0 times nutrient solution and 180μmol · m -2 · s -1 light intensity, respectively. The 1.2 times nutrient solution and 180μmol · m -2 ) · S -1 had the highest soluble sugar content in lettuce under light intensity treatment. The soluble protein, lettuce protein content in lettuce treated with 1.0 × nutrient solution and 130 μmol · m -2 (s -1) The highest content. Considering 1.0 times nutrient solution and 180 μmol · m -2 (s -1) light intensity, the best treatment was hydroponic lettuce.