The reason why it is called micro-fertilizer is because its demand is small and the amount is small, but it is not enough without this element. However, many vegetable farmers do not know much about the amount of micro-fertilizers. Some vegetable farmers even apply tens of hundreds of kilograms at a time like compound fertilizer, which not only causes serious waste, but also causes poison to vegetables. The following introduces the dosage of several major micro-fertilizers:
1. Boron fertilizer. There are mainly borax, boric acid, followed by boron magnesium fertilizer. Borax and boric acid are commonly used boron fertilizers, with 0.5 to 0.75 kg of bottom application or topdressing per acre of soil, foliar spray concentration of 0.1% to 0.3%, seed soaking concentration of 0.01% to 0.1%, and seed dressing for 0.2 kg of fertilizer for each seed 0.5 grams.
2. Zinc fertilizer. There are mainly zinc sulfate, in addition to zinc oxide, zinc nitride, chelated zinc, etc. Zinc sulfate is a commonly used zinc fertilizer. Soil bottom application or top application is 1 to 2 kg per mu, foliar spray concentration is 0.01% to 0.05%, seed soaking concentration is 0.02% to 0.05%, and seed dressing is 1 to 3 fertilizer per kg of seed. G.
3. Molybdenum fertilizer. There are mainly ammonium molybdate, followed by sodium molybdate, molybdenum trioxide and so on. Ammonium molybdate is a commonly used molybdenum fertilizer, 50-150 grams per acre of soil bottom application or topdressing, spraying concentration 0.01% to 0.1%, seed soaking concentration 0.05% to 0.1%, seed dressing is 2 to 5 fertilizer per kilogram of seed G.
4. Copper fertilizer. There are mainly copper sulfate, in addition to copper oxide, chelated copper, and copper-containing slag. Copper sulfate is a commonly used copper fertilizer, with 0.8 to 1.5 kg of bottom application or topdressing per acre of soil, foliar spray concentration of 0.01% to 0.05%, seed soaking concentration of 0.01% to 0.05%, and seed dressing for 0.3 g of fertilizer per kg of seed.
5. Manganese fertilizer. There are mainly manganese sulfate, followed by manganese carbonate, manganese chloride, manganese oxide and so on. Manganese sulfate is a commonly used manganese fertilizer, with 1 to 2 kg of bottom application or topdressing per mu of soil, foliar spraying concentration of 0.05% to 0.2%, seed soaking concentration of 0.05% to 0.1%, and seed dressing for 4 kg of fertilizer per kg of seed 8 grams.
6. Iron fertilizer. There are mainly ferrous sulfate, in addition to ferrous ammonium sulfate, iron chelate and so on. Ferrous sulfate is a commonly used variety, with 5 kg of bottom application or topdressing per mu of soil, and foliar spray concentration of 0.5% to 0.3%.
The amount of micro-fertilizer is very small, and how to apply it evenly is a problem that plagues many vegetable farmers. Some vegetable farmers feel that there is too little fertilizer to use at all, so they do not need or increase the amount of micro-fertilizer, which is detrimental to the normal growth of vegetables. In fact, the uniform application of micro-fertilizer is also very simple, because most micro-fertilizers are soluble, vegetable farmers can spray the dissolved fertilizer solution on the ground after the base fertilizer is sprinkled, and plough into the soil together with the base fertilizer; or The micro-fertilizer dissolves in the bucket and is flushed with water when watering.
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