Nitrogen fertilizer compound synergist and preparation method

A compound synergist and synergist technology, applied in the field of nitrogen fertilizer, can solve the problems of reducing fertilizer nitrogen utilization rate, increasing soil pH value, and easy leaching of nitrate nitrogen, so as to reduce the amount of fertilizer and prolong the period of fertilizer effect , the effect of promoting absorption

Active Publication Date: 2009-06-10
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After urea is applied to the soil, it is quickly converted into ammonium nitrogen under the action of urease in the soil. A large amount of ammonium nitrogen makes the soil pH value rise rapidly and ammonia volatilization increases; Under the action of nitrification, ammonium nitrogen is converted into nitri

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  • Nitrogen fertilizer compound synergist and preparation method
  • Nitrogen fertilizer compound synergist and preparation method
  • Nitrogen fertilizer compound synergist and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw materials of the nitrogen fertilizer compound synergist are: 0.25 parts of N-butylthiophosphoric triamide, 0.25 parts of dicyandiamide, 0.05 parts of PASP, 0.005 parts of alginic acid, and 0.25 parts of humic acid. The molecular weight of the PASP is: 80000 1. Polyaspartic acid having a structural formula such as formula 1.

[0027] Preparation method: The above-mentioned raw materials N-butylthiophosphoric triamide, dicyandiamide, PASP, alginic acid and humic acid are pulverized to 30 meshes, mixed and stirred evenly to prepare the nitrogen fertilizer compound synergist.

[0028] Slow / controlled release nitrogen fertilizer can be produced by using the prepared nitrogen fertilizer compound synergist.

Embodiment 2

[0030] The raw materials of nitrogen fertilizer compound synergist are: 0.5 part of thiophosphoric triamide, 0.5 part of 3,4-dimethylpyrazole phosphate, 0.8 part of PASP, 0.01 part of hydrolyzed amino acid, 0.5 part of humic acid, 0.001 part of molybdic acid Sodium, 0.001 part of manganese sulfate, the molecular weight of the PASP is: 200,000, polyaspartic acid with the structural formula as formula 1.

[0031] Preparation method: Grind the above raw materials phosphorothioate triamide, 3,4-dimethylpyrazole phosphate, PASP, hydrolyzed amino acid, humic acid, sodium molybdate, and manganese sulfate through 50 meshes, and mix and stir evenly to prepare Nitrogen fertilizer compound synergist.

Embodiment 3

[0033] The raw materials of nitrogen fertilizer compound synergist are: 0.9 part of phenylphosphoric diamide, 0.1 part of 3,5-dimethylpyrazole, 0.05 part of PASP, 0.05 part of fulvic acid, 0.5 part of fly ash (fly ash It is a mixture that contains a wide variety of substances, with the highest silicon content, followed by aluminum, in the form of complex double salts. Its main chemical components are silicon dioxide, aluminum oxide, iron oxide, calcium oxide and sulfur trioxide , magnesium oxide, sodium oxide, potassium oxide, etc., while fly ash can also be replaced by lignite or weathered coal.), 0.01 part of ammonium molybdate, 0.01 part of zinc sulfate, the PASP molecular weight is: the molecular weight is: 6001, structural formula Such as polyaspartic acid of formula 1.

[0034] Preparation method: crush the above raw materials phenylphosphoramide, 3,5-dimethylpyrazole, PASP, fulvic acid, fly ash, ammonium molybdate, and zinc sulfate through 80 meshes, mix and stir evenly...

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Abstract

The invention relates to nitrogen element fertilizer, in particular to a nitrogen element fertilizer composite synergist and a preparation method thereof. The composite synergist consists of a biochemical inhibitor, a synergist, a nitrogen element stabilizer, a carrier and microelements, the weight portion ratio of the materials is 1:0.01-1: 0.01-0.5: 0.5-1: 0-0.05, wherein the biochemical inhibitor can be a nitrification inhibitor and a urease inhibitor, the synergist can be poly-aspartic acid, and the nitrogen element stabilizer can be hydrolyzed amino acid, humic acid, alginic acid or alginic acid water soluble salt. The preparation method comprises the following steps: crushing the raw materials, screening the raw materials with a sieve of 30 to 100 meshes, and stirring and mixing the raw materials according to the proportion. The nitrogen element fertilizer composite synergist is suitable for growing long acting nitrogenous fertilizer taking urea or ammonium nitrogen fertilizer as raw materials and can be applied to various soils together with urea or ammonium nitrogen fertilizer so as to effectively prolong the fertilizer efficiency period of the urea or the ammonium nitrogen fertilizer. The fertilizer efficiency period can reach 100 to 120 days. The nitrogen element fertilizer composite synergist has remarkable resistance to diseases, drought and lodging, effectively improves the capability of soil to reserve nutrients, and has good effects for off-season crops.

Description

technical field [0001] The invention relates to a nitrogen fertilizer, in particular to a nitrogen fertilizer compound synergist and a preparation method thereof. Background technique [0002] At present, the common urea produced by industry and used in agriculture is an instant fertilizer, which dissolves and transforms quickly in water and soil, and the overall utilization rate of urea nitrogen is only 30-35%. After urea is applied to the soil, it is quickly converted into ammonium nitrogen under the action of urease in the soil. A large amount of ammonium nitrogen makes the soil pH value rise rapidly and ammonia volatilization increases; Under the action of nitrification, ammonium nitrogen is converted into nitrite nitrogen and nitrate nitrogen in a short period of time. Nitrate nitrogen is easily leached in the soil, and nitrite nitrogen will also be converted into nitrogen oxides. The form is gaseous loss, resulting in a large loss of fertilizer nitrogen, thereby reduc...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/90
CPCY02P60/21
Inventor 李东坡武志杰
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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