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Multi-functional slow-release urea fertilizer and preparation method

A slow-release urea and multi-functional technology, applied in the field of nitrogen fertilizers, can solve the problems of single nutrient and function, and achieve the effects of improving absorption and utilization, resisting lodging, promoting precocious maturity, and promoting absorption and utilization.

Inactive Publication Date: 2012-07-11
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are many kinds of urea fertilizers, and there are also many kinds of slow-release urea fertilizers, that is, urea with synergists and slow-release agents, and coated urea. However, its nutrients and functions are very single. It can only provide nitrogen nutrition for plants, promote the absorption and utilization of nitrogen by crops, and improve the utilization rate of urea nitrogen to a certain extent.
However, there is a lack of a kind that can not only provide nitrogen nutrition for plants, but also provide plants with various essential nutrients, and at the same time promote the absorption and utilization of other nutrients by plants, promote the growth of roots, strengthen plants, and significantly enhance disease resistance, drought resistance, and resistance. Urea products for lodging and early maturation

Method used

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  • Multi-functional slow-release urea fertilizer and preparation method
  • Multi-functional slow-release urea fertilizer and preparation method
  • Multi-functional slow-release urea fertilizer and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The ingredients of the multifunctional slow-release urea fertilizer include urea, biochemical inhibitors, synergists, and water-soluble salt ions of medium and trace elements necessary for plants.

[0036] Based on 100 parts of urea slurry, 0.25 parts of N-butyl thiophosphoric triamide, 0.25 parts of dicyandiamide, 0.05 parts of PASP, 0.5 parts of magnesium, 0.5 parts of zinc and N-butyl thiophosphoric triamide Amine, dicyandiamide, PASP, magnesium nitrate and zinc sulfate are fully dissolved or suspended in a formaldehyde solution with a concentration of 37%, and the multifunctional slow-release urea fertilizer with a nitrogen content of 45% can be obtained through high-tower granulation.

[0037] Wherein the magnesium ions are selected from magnesium nitrate, the zinc ions are selected from zinc sulfate, and the molecular weight of PASP is: 40000, and the structure formula is polyaspartic acid such as formula 1.

[0038] Preparation method: based on 100 parts of urea ...

Embodiment 2

[0040] The ingredients of the multifunctional slow-release urea fertilizer include urea, biochemical inhibitors, synergists, and water-soluble salt ions of medium and trace elements necessary for plants.

[0041] Based on 100 parts of urea slurry, 0.1 part of thiophosphoric triamide, 0.05 part of 3,4-dimethylpyrazole phosphate, and thiophosphoric triamide, 3,4-dimethylpyrazole phosphate Dissolved 37% formaldehyde solution, 1 part of PASP sodium salt, 0.1 part of zinc, 0.1 part of copper, 0.1 part of manganese, 0.1 part of boron, 0.1 part of molybdenum and can dissolve PASP sodium salt, zinc, copper, manganese, boron and molybdenum The water is passed through a high tower to granulate the multifunctional slow-release urea containing PASP, sulfur, zinc, copper, manganese, boron and molybdenum with a nitrogen content of 45.5%.

[0042] Wherein copper ion is selected from copper sulfate, zinc ion is selected from zinc sulfate, manganese ion is selected from manganese sulfate, bora...

Embodiment 3

[0045] The ingredients of the multifunctional slow-release urea fertilizer include urea, biochemical inhibitors, synergists, and water-soluble salt ions of medium and trace elements necessary for plants.

[0046] Based on 100 parts of urea slurry, 5 parts of N-butylthiophosphoric triamide, 5 parts of 3,5-dimethylpyrazole, and N-butylthiophosphoric triamide and 3,5 - Dimethylpyrazole dissolved in 37% formaldehyde solution, 1 part PASP, 0.5 part calcium, 0.5 part magnesium, 0.1 part zinc, 0.1 part copper, 0.1 part manganese, 0.1 part boron, 0.1 part molybdenum and PASP, calcium, magnesium, zinc, copper, manganese, boron and molybdenum dissolved in water, through high-tower granulation to obtain 41.2% nitrogen content containing PASP, calcium, magnesium, sulfur, zinc, copper, manganese, boron, Molybdenum's multifunctional slow-release urea.

[0047] Wherein calcium ions are selected from calcium chloride, magnesium ions are selected from magnesium sulfate, zinc ions are selected...

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Abstract

The invention relates to nitrogen fertilizers, in particular to a multi-functional slow-release urea fertilizer and a preparation method. The fertilizer comprises urea, a biochemical inhibitor, synergist, water-soluble salt ions of secondary and trace elements necessary for plants and / or beneficial elements for plant growth. By weight percentage, the weight percentage of the urea to the biochemical inhibitor to the synergist is equal to 1: 0.001-0.1: 0.0005-0.05, the salt ions of the secondary and trace elements necessary for the plants comprises one kind or a plurality of kinds of calcium, magnesium, sulfur, ferrum, copper, zinc, manganese, boron, molybdenum and chlorine, the weight percentage of the urea to all the secondary and trace elements necessary for the plants is equal to 1: 0-0.1: 0-0.1: 0-0.06: 0.001-0.03: 0.001-0.01: 0.001-0.01: 0.001-0.008: 0.001-0.01: 0.001-0.005: 0-0.006, the beneficial elements for the plant growth comprise silicon and selenium, and the weight percentage of the urea to all beneficial elements for the plant growth is equal to 1: 0-0.1: 0.001-0.08. The multi-functional slow-release urea fertilizer can promote growth of root systems, invigorate plants, enhance disease resistance, drought resistance and lodging resistance, and stimulate prematurity.

Description

technical field [0001] The invention relates to a nitrogen fertilizer, in particular to a multifunctional slow-release urea fertilizer and a preparation method thereof. Background technique [0002] Common urea produced in industry and used in agriculture is an instant fertilizer, which dissolves and transforms quickly in water and soil. After ordinary 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; in the soil with good aeration, the soil nitrifying bacteria 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 of gaseous loss, resulting in a large loss of fertilizer nitrogen, thereby reducing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/00C05G3/90
CPCY02P60/21
Inventor 李东坡于德清
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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