First, boron fertilizer There are borax, boric acid, followed by boron and magnesium fertilizer. Borax, boric acid application or top-dressing 0.5-0.75 kilograms per acre, foliar spraying concentration of 0.1% to 0.3%, soaking concentration of 0.01% to 0.1%, seed dressing per kilogram of seed fertilizer 0.2 to 0.5 grams. Second, zinc fertilizer There are mainly zinc sulfate, zinc oxide and chelated zinc. Zinc sulphate is commonly used zinc fertilizer, soil application or topdressing 1 to 2 kilograms per acre, foliar spray concentration of 0.01% to 0.05%, soaking concentration of 0.02% to 0.05%, seed dressing per kilogram of seed fertilizer 1 to 3 Grams. There are mainly ammonium molybdate, sodium molybdate and molybdenum trioxide. Ammonium molybdate is a commonly used molybdenum fertilizer, applying or applying 50-150 g per acre of soil, applying a concentration of 0.01%-0.1%, soaking in a concentration of 0.05%-0.1%, and dressing seed for a fertilizer of 2-5 per kilogram of seed. Grams. Fourth, copper fertilizer There are mainly copper sulfate, copper oxide, chelated copper, and copper-containing slag. Copper sulphate is commonly used copper fertilizer, applying 0.8-1.5 kilograms per acre of soil or topdressing, foliar spray concentration of 0.01%-0.05%, soaking concentration of 0.01%-0.05%, and seed dressing of 0.3 grams per kilogram of seed fertilizer. Mainly manganese sulfate, followed by manganese carbonate, manganese chloride, manganese oxide and so on. Manganese sulphate is a commonly used manganese fertilizer, applied or applied 1 to 2 kilograms per acre soil, 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 ~ 8 grams. There are mainly ferrous sulfate, in addition to ferrous ammonium sulfate, iron chelates. Ferrous sulphate is a commonly used species. Each kilogram of soil applied or topdressing 5 kilograms, foliar spray concentration of 0.3% to 0.5%. The amount of micro-fertilizer is very small, and how to apply it evenly is a problem. Many people think that the amount of fertilizer is really too small to be used at all, so that they do not use or increase the amount of micronutrient fertilizer, which is detrimental to the normal growth of vegetables. In fact, the uniform application of micronutrients is also very simple because most of the micronutrients are soluble. The vegetable growers can spray the dissolved fertilizer solution on the ground after the base fertilizer is spread, and plow the soil with the base fertilizer into the soil; or The fertilizer is dissolved in a bucket and flushed with water during watering. Polyacrylamide is a kind of high molecular polymer. It is widely used for industry like water treatment, paper, oil, coal, mine, textile, construction, etc.
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Third, molybdenum
Fifth, manganese fertilizer
Sixth, iron fertilizer
