How to use zinc sulfate

1. Make base fertilizer on dry land such as corn, wheat, cotton, rape, sweet potato, soybean, peanut, etc. Generally use 1~2 kg of zinc sulfate per mu, mix 10~15 kg of dry fine soil, and evenly sprinkle on the surface after mixing thoroughly. , And then plowing into the soil, it can also be applied in strips or holes. Planting vegetables uses 2 to 4 kilograms of zinc sulfate per mu.

It can be used as rake surface fertilizer for early and medium rice in paddy fields. Use 1 to 1.5 kg of zinc sulfate per acre, add 20 to 25 kg of dry fine soil, mix well and spread it. Physiological acid fertilizers are evenly mixed before spreading (not mixed with phosphate fertilizers). When making the base fertilizer for the seedling field, use 3 kg of zinc sulfate per mu and spread it evenly on the bed 3 days before sowing in the seedling field.

2. Make top dressing. Top dressing can directly apply zinc fertilizer to the soil. It is best to apply it in a concentrated strip or in a hole near the root system to facilitate root absorption and improve the utilization of zinc fertilizer.

① Corn: From the seedling stage to the jointing stage, use 1 to 2 kilograms of zinc sulfate per mu, mix 10 to 15 kilograms of dry fine soil, and apply in strips or holes. Since zinc fertilizer is not easy to move in the soil, it should be applied near the root system as much as possible, but it should not be in direct contact with the root system.

②Wheat: Apply in series between rows from green to jointing stage, mix 10-15 kg of fine soil with 1 to 2 kg of zinc sulfate per mu or blend with urea, and apply fertilizer at a depth of 5 to 6 cm.

③Cotton: In the seedling stage, apply it in strips or holes, mix 10-15 kilograms of dry fine soil with 1 kilogram of zinc sulfate per mu.

④Sweet potato: Apply in a hole during the Tuanke stage, mix 10-15 kg of dry fine soil with 1 kg of zinc sulfate per mu.

⑤Rice: In the early stage of tillering (10-30 days after transplanting), mix 1 to 1.5 kilograms of zinc sulfate per mu with dry and fine soil and evenly spread on the field; it can also be used as "sending fertilizer" in the seedling field, that is, before pulling out the seedlings. For 2 to 3 days, apply 1.5 to 2.0 kg of zinc sulfate per mu on the bed surface, and transplant seedlings with fertilizer.

3. Foliar spraying It can be applied to various field crops, fruit trees and vegetables.

①Maize: From the seedling stage to the jointing stage, spray with 0.1%～0.2% zinc sulfate solution twice, with an interval of 7 days, spray 50～75 kg solution per mu each time; use zinc sulfate at the seedling stage of corn When spraying water solution to prevent and control "white seedlings", it cannot be mixed with potassium dihydrogen phosphate or superphosphate leaching solution.

②Rice: Spraying at the seedling stage is better. The seedlings are sprayed from 2 to 3 leaves. Honda is sprayed at the tillering stage and sprayed continuously with 0.1% to 0.3% zinc sulfate solution for 2 to 3 times at intervals. For 7-10 days, spray 40-50 kg of solution per mu each time.

③Wheat: Spray 0.2%-0.4% zinc sulfate solution once at the jointing stage and booting stage, and the spray amount per mu is 50-75 kg.