How much zinc sulfate heptahydrate is used in an mu of land?

  The amount of zinc sulfate heptahydrate depends on the crop type and growing environment. In dryland crops such as corn, wheat, etc., 1 to 2 kilograms of zinc sulfate heptahydrate is usually used as the base fertilizer per mu. For vegetable planting, the amount per mu is 2 to 4 kg. In paddy crops such as rice, the amount is lower, and the rake fertilizer of early and middle rice is used 1~1.5 kg per mu. These amounts can be adjusted to the needs of specific crops and soil conditions. In addition, zinc sulfate heptahydrate can also be used as a foliar spray, and the specific concentration and frequency should be determined according to the crop type and growth stage.
  Zinc sulfate is a supplement of zinc in feed, which is a component of many enzymes, proteins, ribose, etc., in animals, participating in carbohydrate and fat metabolism, and can catalyze the mutual conversion of pyruvate and lactic acid to promote growth. Zinc deficiency can easily cause hypokeratosis, dysplasia and hair deterioration, and can affect the reproductive function of animals.
  Zinc sulfate is used as mordant, wood preservative, bleaching agent in paper industry, also used in medicine, artificial fiber, electrolysis, electroplating, pesticides and the production of zinc salt ‌.

  Zinc sulfate is mainly used as coagulant for artificial fiber. In the printing and dyeing industry, it is used as a mordant and an alkali-resistant agent for valamine blue salt dyeing. It is the main raw material for manufacturing inorganic pigments (such as zinc barium white), other zinc salts (such as zinc stearate, basic zinc carbonate) and zinc-containing catalysts. Used as wood and leather preservative, bone glue clarification and preservative. Used as emetics in the pharmaceutical industry. It can also be used to prevent disease in fruit tree nurseries and to manufacture cables and zinc microfertilizer. Food grade products can be used as nutritional supplements (zinc enhancers), etc.