Zinc deficiency in crops is a common trace element deficiency. Common features are: leaf chlorosis, internode shortening, clusters, leaflets, plant dwarf, growth inhibition, seed emptying rate, low yield, the solution is Apply zinc fertilizer. Once zinc is supplemented, the growth and development of the crop will be significantly improved, which will increase the seed-setting rate, increase the resistance to cold and disease, and increase the output by more than 10%.
Zinc deficiency in soil is very common. The use of a large amount of compound fertilizers and phosphate fertilizers can induce zinc deficiency in crops and require the addition of zinc fertilizers. The application of hybrid varieties and high-yield cultivation techniques results in a greater amount of zinc for the crops and an additional application of zinc fertilizer. Application of zinc fertilizer in corn, wheat, cotton, rape, fruit trees, vegetables, soybeans, peanuts and other crops can significantly improve and improve product quality.
Zinc fertilizer can generally be used as base fertilizer, top dressing and seed fertilizer.
1, base fertilizer. When zinc fertilizer is used as base fertilizer, it is generally applied 1-2 kg of zinc sulfate per acre, which can be mixed with physiological acidic fertilizers. Mild zinc-deficient blocks are applied again at intervals of one to two years. Moderate zinc-deficient blocks are reduced every year or in the following year.
2, top dressing. Zinc fertilization is usually used as a top-dressing fertilizer. Generally, the crop is sprayed with a zinc sulfate solution with a concentration of 0.02%-0.1%, and corn can be used at a concentration of 0.1%-0.5%. The fruit trees can be sprayed with 5% zinc sulfate one month before germination, and the germination consequence tree is brushed with 3%-4% concentration; annual branches are applied 2-3 times or sprayed with 0.2% concentration of zinc sulfate solution in early summer.
3, seed fertilizer. Seed soaking or seed dressing is often used for seed fertilizers. Soaking seeds with a concentration of 0.02%-0.1%, soaking for 12 hours, and sowing after sowing. Seed dressing per kilogram of seeds with 2g-6g zinc sulfate, corn can be used 2g-4g.
In addition, it should be noted that it is advisable to apply zinc fertilizer sooner rather than later, and it is best applied in the early stage of crop growth. Zinc fertilizer should be combined with nitrogen, phosphorus and potash fertilizers in order to exert greater fertility and obtain a better harvest. Zinc fertilizer should be strictly controlled and applied according to the recommended amount.
Huaxian County Soil Fertilizer Station Zhao Dongli
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