Product Introduction

Zinc sulfate heptahydrate (Zinc sulfate Heptahydrate) is an inorganic compound with the molecular formula ZnSO4-7H2O, commonly known as alum, zinc alum. Colorless rhombohedral prismatic crystals, white crystalline powder, soluble in water, slightly soluble in ethanol. Loses water when heated to 200°C and decomposes at 770°C. Zinc sulfate heptahydrate is harmful if swallowed.

Zinc sulfate heptahydrate is harmful if swallowed, can cause serious eye damage, is highly toxic to aquatic organisms, and may have long-term adverse effects on the aquatic environment. Zinc sulfate heptahydrate can be used as mordant, wood preservative, paper industry bleaching agent, but also used in medicine, synthetic fiber, electrolysis, electroplating, pesticides and production of zinc salts.

Product features: Zinc is one of the trace elements needed for crop growth, is a component of many enzymes, application of zinc sulfate can improve the yield and quality of seeds, enhance the photosynthesis and respiration of crops, stimulate cellular vitality, promote the synthesis of carbohydrates in the body of the crop and the operation of the crop to increase the synthesis of chlorophyll and growth hormone, and promote the absorption of nitrogen, phosphorus and potassium nutrients in the crop to improve the crop's cold resistance, drought resistance, resistance to salinity and alkali, Disease resistance, resistance to adversity, promote early maturity, increase the weight of thousand grains.

How to use zinc sulfate

1. For base fertilizer: 

zinc sulfate can be used as base fertilizer for corn, wheat, cotton, rape, sweet potato, soybean, peanut and other dryland crops, generally 1~2 kg of zinc sulfate per mu, mixed with 10~15 kg of dry fine soil, after thorough mixing, evenly spread on the ground surface, and then ploughed into the soil, or can be applied strip or hole. For vegetable use, it is 2~4 kg of zinc sulfate per mu. For paddy fields can be used as early, middle rice harrowing fertilizer, 1 ~ 1.5 kg of zinc sulfate per mu, plus 20 ~ 25 kg of dry fine soil, well mixed and spread, after the application of harrowing and transplanting rice seedlings, but also can be mixed with organic fertilizer or physiological acidic fertilizers, and then sprinkled (can not be mixed with phosphorus fertilizer). When doing seedling base fertilizer, use 3 kg of zinc sulfate per mu, and evenly sprinkle it on the bed 3 days before seeding.

2. Foliar spraying:

Fruit trees: spray 3% to 5% zinc sulfate solution one month before budding in early spring, after budding, the concentration of spraying should be reduced to 1% to 2%, or 2% to 3% zinc sulfate solution to brush the annual branches 1 to 2 times.

3.Vegetables:

 foliar spraying using a concentration of 0.05% to 0.1% zinc sulfate solution, spraying in the early growth of vegetables is more effective, each interval of 7 days, spraying 2 to 3 times in a row, each time each mu spraying 50 to 75 kg of solution.