High-tower long-acting compound fertilizer and preparation method thereof

A compound fertilizer and long-acting technology, applied in fertilizer mixture, fertilization device, application, etc., can solve the problems of nitrate nitrogen fertilizer leaching, short fertilizer effect period, unfavorable fertilizer effect, etc., to improve fertilizer utilization rate, improve fertilizer efficiency, and avoid sublimation loss effect

Active Publication Date: 2014-01-22
重庆九禾测土配肥有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But everything has two sides, both advantages and disadvantages, and the same is true for nitro compound fertilizers. One is easy to dissolve in water, has high solubility, strong hygroscopicity, and can turn into liquid after moisture absorption; second, nitrate is an anion, which is difficult to be negatively charged. Adsorbed by the soil colloid, the mobility in the soil profile is relatively large, so in the case of frequent rainfall or irrigation, it is easy to cause nitrate nitrogen fertilizer to leaching to the lower soil, which is not conducive to exerting its fertilizer effect; Under conditions, nitrate (NO 3 - ) can be formed by denitrification, N 2 O and N 2 gas, causing loss of nitrogen
Therefore, its characteristic is that the fertilizer effect comes quickly, but the disadvantage is that the stamina is poor and the loss is large.
[0003] Aiming at the disadvantages of nitro compound fertilizers such as short effective period and easy loss, there is an urgent need for a method to reduce fertilizer loss, improve crop utilization, minimize environmental pollution caused by frequent rainfall or irrigation in the southern region, and fully meet the needs of fruit production. Long-acting compound fertilizer for the nutrient requirements of vegetables

Method used

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  • High-tower long-acting compound fertilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0018] High-tower long-acting compound fertilizer, its formula is: 1000 kg of high-tower long-acting compound fertilizer consists of 455 kg of ammonium nitrate, 33 kg of monoammonium phosphate, 373 kg of potassium sulfate, and 0.2 kg of 2-chloro-6-trichloromethylpyridine , 2 kg of coating agent, 5 kg of talcum powder and 131.8 kg of silica powder.

[0019] The preparation method of the high-tower long-acting compound fertilizer comprises the following steps: performing automatic batching of ammonium nitrate, monoammonium phosphate, potassium sulfate and silica powder, and pulping solids with particles smaller than 0.5mm at a temperature of 170°C; and then After mixing in the mixing tank, spray it into the granulation tower through the nozzle, cool and solidify in the air to form particles with a particle size of 3.5mm, and the particles pass through the belt conveyor, cooler, and vibrating screen to make the particles with the same particle size more than 95%; Then, the granul...

Embodiment 2

[0023] Get the high-tower long-acting compound fertilizer that embodiment 1 makes and carry out experiment in the citrus of Guangdong. Set two treatments of farmers' customary fertilization and high-tower long-acting compound fertilizer (with the same content of nitrogen, phosphorus and potassium), repeat 3 times, fertilize 3 times, germination fertilizer, strong fruit fertilizer, and fruit picking fertilizer, farmers' customary fertilization does not contain 2-chloro The compound fertilizer of -6-trichloromethylpyridine, the fertilizer dosage is respectively 2Kg / tree, 3Kg / tree, 3Kg / tree, and the high-tower long-acting compound fertilizer is applied to the high-tower long-acting compound fertilizer, and the dosage is respectively 1.6Kg / tree , 2.4Kg / tree, 2.4Kg / tree, fertilization method Dig a ditch 20 cm deep and 20 cm wide under the drip line of the crown, apply the fertilizer evenly, and then cover the soil. The experimental results show that compared with farmers' customary...

Embodiment 3

[0025] High-tower long-acting compound fertilizer, its formula is: 1000 kg of high-tower long-acting compound fertilizer consists of 482 kg of ammonium nitrate, 50 kg of monoammonium phosphate, 392 kg of potassium sulfate, and 0.3 kg of 2-chloro-6-trichloromethylpyridine , 2 kg of coating agent, 5 kg of talcum powder and 68.7 kg of silica powder.

[0026] The preparation method of the high-tower long-acting compound fertilizer comprises the following steps: performing automatic batching of ammonium nitrate, monoammonium phosphate, potassium sulfate and silica powder, making slurry for solids with particles smaller than 0.5mm at a temperature of 170°C; and then After mixing in the mixing tank, spray it into the granulation tower through the nozzle, cool and solidify in the air to form particles with a particle size of 4.5mm, and the particles pass through the belt conveyor, cooling machine, and vibrating screen to make the particles with the same particle size more than 95%; Th...

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Abstract

The invention discloses high-tower long-acting compound fertilizer and a preparation method of the high-tower long-acting compound fertilizer. The high-tower long-acting compound fertilizer comprises 0.2-0.4% of 2-chlorine-6-nitrapyrin by weight, and the 2-chlorine-6-nitrapyrin can restrain ammonium nitrogen from being converted into nitrate nitrogen and prolong fertilizer efficiency for more than one month. The high-tower long-acting compound fertilizer is prepared through a high-tower fusing pelleting technology, a formula amount of the 2-chlorine-6-nitrapyrin is added after the fertilizer is pelletized, film packaging is carried out at the temperature of 80-90 DEG C, the prepared fertilizer is smooth and through in particle, small holes are formed in the surfaces of the fertilizer particles, and the high-tower long-acting compound fertilizer is uniform in nutrient, high in strength, easy to dissolve, and not prone to caking.

Description

technical field [0001] The invention belongs to the field of fertilizers, in particular to a high-tower long-acting compound fertilizer, and also relates to a preparation method of the compound fertilizer. Background technique [0002] Nitro compound fertilizer is a new type of chemical fertilizer that is developing rapidly in my country in recent years. It is a high-concentration compound fertilizer containing ammonium nitrogen and nitrate nitrogen. The modified nitro compound fertilizer product is safe, reliable, easy to use, good in environmental protection, and high in nutrient content. It not only retains the basic characteristics of the original ammonium nitrate, but also contains nutrients such as nitrogen, phosphorus, and potassium needed for crop growth, and the nutrients are balanced. , with high content of active ingredients. Compared with traditional compound fertilizers, it has fast fertilizer efficiency and high absorption rate. It is a high-quality fertilizer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 陈新平谭庆军崔振岭吴军华周勇
Owner 重庆九禾测土配肥有限责任公司
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