Zinc fertilizer mainly includes zinc sulfate, zinc oxide, zinc nitride, and chelated zinc. Zinc sulphate is a common zinc fertilizer, applied at a rate of 1 to 2 kilograms per acre at the end of application or application, foliar spraying at a concentration of 0.01% to 0.05%, soaking at a concentration of 0.02% to 0.05%, and seed dressing at 1 to 3 grams per kilogram of seed fertilizer. .

Molybdenum is mainly composed of ammonium molybdate, followed by molybdate and molybdenum trioxide. Ammonium molybdate is a commonly used molybdenum fertilizer, applying 50-150 grams per acre or topdressing, spraying a concentration of 0.01% to 0.1%, soaking in a concentration of 0.05% to 0.1%, and seed dressing of 2-5 grams per kilogram of seed fertilizer.

Copper fertilizer mainly includes copper sulfate, copper oxide, chelated copper, and copper-containing slag. Copper sulfate is a commonly used copper fertilizer, applying 0.8-1.5 kg per acre or topdressing, foliar spray concentration of 0.01%-0.05%, seed soaking concentration of 0.01%-0.05%, and seed dressing 0.3 g per kilogram of seed fertilizer.

Manganese fertilizer mainly includes manganese sulfate, followed by manganese carbonate, manganese chloride and manganese oxide. Manganese sulphate is commonly used manganese fertilizer, applied or applied 1 to 2 kilograms per acre bottom, foliar spray concentration of 0.05% to 0.2%, soaking concentration of 0.05% to 0.1%, seed dressing per kilogram of seed fertilizer 4 to 8 grams .

Iron fertilizers mainly include ferrous sulfate, and ammonium ferrous sulfate, iron chelates, and the like. Ferrous sulphate is a commonly used variety, applied per acre or topdressing 5 kg, foliar spray concentration of 0.3% to 0.5%.

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