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在立柱式水培中,蔬菜根际生态环境缓冲性能较差,因此,在蔬菜生长过程中改变和控制营养液浓度就显得很重要。在国内有学者提出,鉴于目前营养液水培蔬菜长势不很理想,建议加大营养液配方中的元素含量以求提高产量。为此,我们安排了不同营养液浓度的比较试验,以探索其对生菜产量和品质的影响,同时筛选出适于生菜生长的营养液使用浓度,供生产推广应用。
In column hydroponics, the ecological environment of vegetable rhizosphere has poor buffering capacity. Therefore, it is very important to change and control the concentration of nutrient solution in the process of vegetable growth. Some scholars in China suggested that in view of the current nutritional liquid hydroponic vegetables growing is not very satisfactory, it is recommended to increase nutrient solution formulations in order to increase production of elements. To this end, we arranged comparative experiments of different nutrient solution concentrations to explore their impact on the yield and quality of lettuce, and at the same time we screened the concentration of nutrient solution suitable for the growth of lettuce for the promotion of production.