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Zinc is an indispensable trace element for crop growth. Zinc deficiency can cause dwarfing of plants, short internodes, inhibition of leaf expansion and elongation, and appearance of leaflets with twisted and wrinkled edges. Alzheimer's corn seedlings and rice seedlings are caused by zinc deficiency. There are four ways to prevent zinc deficiency in crops:
The seed dressing dissolves the zinc sulfate in a small amount of water, stirs it, and mixes it with the seeds. After drying, it is sown.
Seed soaking with zinc sulfate solution, corn can be soaked for 6 to 8 hours, the solution concentration of 0.02% to 0.05%; rice can be soaked for 12 hours, the solution concentration of 0.1%.
Foliar spraying can be sprayed with 0.1% zinc sulfate immediately after the occurrence of zinc deficiency symptoms in the early stage of crop growth, and sprayed once every 7-10 days.
Soil application is mixed with other fertilizers to make basal fertilizers. The dosage is 1 to 3 kg/mu. Pay attention to uniform application.