Slow-release nitro compound fertilizer and its preparing method
A technology of compound fertilizer and nitro, which is applied in the direction of ammonium nitrate fertilizer, nitrogen fertilizer, fertilization device, etc., can solve the problems of increasing trouble and labor intensity, the nitrogen content should not be too high, and restricting agricultural development, etc., and achieve low cost and high efficiency. Crop Yield, Effect of Elimination of Explosiveness
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Embodiment 1
[0020] A kind of long-acting nitro compound fertilizer, adding 4% P of ammonium nitrate weight in ammonium nitrate 2 o 5 (where P 2 o 5 Take NH 3 h 2 PO 4 The form that adds) and the dicyandiamide of ammonium nitrate weight 5%;
[0021] The preparation method is as follows: directly add solid powdery phosphorus and dicyandiamide into the molten ammonium nitrate in the production process of ammonium nitrate by a feeder in proportion, and then evaporate and granulate together to make a long-acting nitro compound fertilizer product.
[0022] The long-acting nitro compound fertilizer is applied on corn, and the test treatment (in terms of the amount of fertilization per mu) is: 1. 30 kg of compound fertilizer is applied to the reference base fertilizer, and 15 kg of urea is topdressed at the jointing stage; 2. 35 kg of long-acting nitro compound fertilizer and the same amount of phosphorus and potassium were applied once as base fertilizer; the results are shown in Table 1. ...
Embodiment 2
[0026] A kind of long-acting nitro compound fertilizer, adding 5% K of ammonium nitrate weight in ammonium nitrate 2 O and P 2 o 5 (where P 2 o 5 Take NH 3 h 2 PO 4 Form join, K 2 O to K 2 CO 3 The form that adds,) and the dicyandiamide of ammonium nitrate weight 0.3%;
[0027] Its preparation method is as follows: the solid powder NH 3 h 2 PO 4 and K 2 CO 3 After mechanical mixing with the same particle size, it is directly added into liquid ammonium nitrate with a feeder in solid form, and dicyandiamide is added into molten ammonium nitrate in the production process of ammonium nitrate in liquid form, and then evaporated and granulated together to make long-acting nitrate Based compound fertilizer products.
[0028] Long-acting nitro-compound fertilizer is applied on paddy rice, and test is handled (calculate in mu fertilization rate) as: 1, contrast base manure compound fertilizer 30kg, topdressing urea 20 kg at jointing stage; 2, long-acting nitro-compound f...
Embodiment 3
[0032] A kind of long-acting nitro compound fertilizer, adding 8% K of ammonium nitrate weight in ammonium nitrate 2 O (where K 2 O to K 2 CO 3 The form of adding,) and the dicyandiamide of ammonium nitrate weight 2%;
[0033] Its preparation method is as follows: the solid powder K 2 CO 3 Dicyandiamide is directly added into the molten ammonium nitrate in the production process of ammonium nitrate by a feeder in proportion, and then evaporated and granulated together to make a long-acting nitro compound fertilizer product.
[0034] The long-acting nitro-compound fertilizer is applied on spring wheat, and the test treatment (calculated by the amount of fertilization per mu) is: 1. 30 kg of compound fertilizer is applied to the reference base fertilizer, and 10 kg of urea is topdressed at the jointing stage; 2. 30 kg of long-acting nitro-compound fertilizer and the same amount of phosphorus and potassium were applied once as base fertilizer; the results are shown in Table ...
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