Zinc is one of the essential micronutrients for crop growth and a component of many enzymes. The application of zinc sulfate can improve seed yield and quality, enhance photosynthesis and respiration of crops, stimulate cell vitality, promote the synthesis and operation of carbohydrates in crops, increase the synthesis of chlorophyll and auxin, promote the absorption of nutrients such as nitrogen, phosphorus, and potassium by crops, improve their cold resistance, drought resistance, salt alkali resistance, disease resistance, and stress resistance, promote early maturity, and increase 1000 grain weight. The application of zinc sulfate has significant effects on maize "flower white seedlings, ear grain deficiency and bald tip", rice "stiff seedlings, shrinking seedlings, and sitting on stumps", fruit trees "small leaf disease, mosaic disease, and leaf shrinkage disease", cluster growth, cluster growth, small fruit disease, growth and development stagnation, plant dwarfism, internode shortening, yellowing and chlorosis of leaves, yellow and white spots, underdeveloped crop root growth, flower drop, bud drop, curling of young leaves, and growth shrinkage caused by zinc deficiency. After spraying, it can be quickly absorbed by crops, making the leaves thick and bright, the stems and leaves robust, the fruits expand quickly, the yield increases, and the quality improves.