The invention provides a soilless culture
nutrient solution for leaf vegetables and a preparation method of the soilless culture
nutrient solution. The soilless culture
nutrient solution is prepared from mother solutions A, B, C, D and E and is prepared into an early-stage field planting
nutrient solution and a later-stage field planting
nutrient solution according to requirement differences of different development stages of the
leafy vegetables. The preparation method of the soilless culture
nutrient solution comprises the following steps: preparing compound probiotics
fermentation liquid; preparing the mother solutions A, B, C, D and E; and sequentially diluting the mother solutions into
tap water in proportion, uniformly stirring, and correcting the pH, so as to obtain the soilless culture nutrient solution. The soilless culture nutrient solution meets requirements of the
leafy vegetables in each growth and development stage to nutrient elements, the yield and the quality of the
leafy vegetables are improved, furthermore, the
immunity of the
leafy vegetables is improved, and the occurrence rates of
plant diseases and
insect pests are decreased, so that the application of pesticides is reduced, the cost is lowered, and finally the economic benefit of vegetable farmers can be increased.