The invention discloses a preparation method of a leaf vegetable nano leaf
fertilizer. According to the method, raw materials are smashed and decomposed into nano-scale materials through high-temperature stirring,
electron beam
irradiation and ultrasonic treatment based on
lignin containing a net structure and active radicals in
papermaking black liquid, and the adsorptive property of the
lignin is increased, so that a
phosphate fertilizer, a
nitrogen fertilizer, a
potash fertilizer, imino disuccinate chelated microelements, two conditioners such as rapin and biochemical
fulvic acid and nanometer titania are adhered and bonded together to prepare the leaf vegetable nano leaf fertilizer. The preparation technology is simple, low in cost and high in
controllability, the prepared leaf vegetable nano leaf fertilizer is scientific in proportioning of the raw materials and high in total
nutrient content, the product is mixed with water, the mixture is sprayed and applied onto leaves of leaf vegetables, so that on one hand, nutrients of the leaf fertilizer can be fixed on the leaves, drifting, leaching loss and
evaporation of the fertilizer are reduced, on the other hand,
nutrient absorption and movement inside the leaves of the leaf vegetable fertilizer can be promoted, and the absorption and
utilization rate is high.