Nitrogen fertilizer long-acting synergist and its application
2018-12-13 11:23:52
Before fertilizing, mix the long-acting nitrogen fertilizer synergist and nitrogen fertilizer at a certain proportion (100 kg ammonium bicarbonate plus long-acting synergist 3-4 kg, 100 kg urea plus 2.0-2.5 kg) and mix it evenly together with phosphorus and potassium fertilizer. The end. Nitrogen fertilizer long-acting synergist use matters needing attention 1, now used mixed If you do not mix for a long time after mixing, the fertilizer will become sticky, although not affect the fertilizer effect, but it will bring inconvenience to fertilization. 2, Fertilizer isolation fertilizer once input, a large amount of fertilizer, salt ion concentration is high, easy to cause burning seedlings. Fertilizers must be seed and fertilizer isolated. Generally 5-6 cm from the side of the seed is appropriate. 3, depending on the soil used leakage of water leakage fertilizer land generally does not advocate the one-time application of fertilizer. Introduce two kinds of fertilization formula 1, three-element compound fertilizer with 15% NPK nutrient content and total nutrient content ≥ 45%, and long-time synergist. That is, every 667 square meters with 45% content of compound fertilizer 20 kg + 15 -17.5 kg of urea + long-term synergist 1 kg, after the end of a mixed application. The formula can reduce the cost of 8-13 yuan per 667 square meters compared to the long-acting fertilizer produced by the fertilizer plant. 2, directly with urea, granular phosphate fertilizer, potassium chloride and long-term synergist mix. That is, every 667 square meters of granular phosphate fertilizer (12%) 30-40 kg + 15-20 kg of urea + potassium chloride 5 kg + long-term synergist 1 kg. Mix well before sowing, and apply once at the end. The application of the formula can reduce the cost of 10-15 yuan per 667 square meters than the long-acting fertilizer produced by the fertilizer factory.
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