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Sustained-control-release water-retention multifunctional nitrogen fertilizer and preparation method thereof

A multi-functional, nitrogen fertilizer technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of incomplete use of chemical fertilizers and the decline in the effect of increasing production of chemical fertilizers, to maintain long-term effects, reduce nutrient loss, and improve porosity sexual effect

Active Publication Date: 2013-02-20
佳木斯恺乐农业生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical fertilizers have not been used to their fullest potential. Among them, the utilization rate of nitrogen fertilizer, which is used in the largest amount, is only 30% to 35% in the current season, and the effect of chemical fertilizers on increasing production has shown a downward trend in some places.

Method used

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  • Sustained-control-release water-retention multifunctional nitrogen fertilizer and preparation method thereof
  • Sustained-control-release water-retention multifunctional nitrogen fertilizer and preparation method thereof
  • Sustained-control-release water-retention multifunctional nitrogen fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A slow and controlled release water-retaining nitrogen fertilizer, the raw material components are as follows:

[0044] Melamine 10kg, urea 800kg, ammonium sulfate 610kg, magnesium sulfate 400kg, zinc sulfate 20kg, coating agent 10kg, coating agent solvent 150kg;

[0045] The coating agent solvent is water;

[0046] The raw material components of the coating agent are as follows: 1kg collagen, 2kg chitin, 4kg polyacrylamide ammonium and 3kg C12 fatty alcohol polyoxyethylene (3) ether ammonium sulfate (C 18 h 41 NO 7 S).

[0047] The preparation method of the above-mentioned slow and controlled release water-retaining multifunctional nitrogen fertilizer has the following steps:

[0048] (1) Mix urea, ammonium sulfate, melamine, magnesium sulfate, and zinc sulfate evenly to prepare a mixed material;

[0049] (2) The mixed material prepared in step (1) is granulated through a disc granulation process, and the particles with a particle size of 1-4.75 mm are screened to...

Embodiment 2

[0054] Slow and controlled release water retention multifunctional nitrogen fertilizer as described in Example 1, the difference is that the raw material components are as follows:

[0055] Melamine 200kg, urea 200kg, ammonium sulfate 610kg, magnesium sulfate 80kg, zinc sulfate 20kg, coating agent 7.5kg, coating agent solvent 10kg, water 2.5kg, polyvinyl alcohol 2.5kg, paraffin 5kg;

[0056] The raw material components of the coating agent are as follows: 1kg collagen, 2.5kg chitin, 1.5kg polyacrylamide ammonium and 2kg C12 fatty alcohol polyoxyethylene (3) ether ammonium sulfate (C 18 h 41 NO 7 S).

[0057] The preparation method is the same as in Example 1.

Embodiment 3

[0059]Slow and controlled release water retention multifunctional nitrogen fertilizer as described in Example 1, the difference is that the raw material components are as follows, all in parts by weight:

[0060] Melamine 400kg, urea 800kg, ammonium sulfate 1000kg, magnesium sulfate 400kg, rare earth nitrate 100kg, zinc sulfate 20kg, coating agent 20kg, water 20kg;

[0061] The raw material components of the coating agent are as follows: 5kg collagen, 5kg chitin, 3kg polyacrylamide ammonium and 7kg C12 fatty alcohol polyoxyethylene (3) ether ammonium sulfate (C 18 h 41 NO 7 S).

[0062] The preparation method of the above-mentioned slow and controlled release water-retaining multifunctional nitrogen fertilizer has the following steps:

[0063] (1) Mix urea, ammonium sulfate, melamine, magnesium sulfate, rare earth nitrate, and zinc sulfate evenly to prepare a mixed material;

[0064] (2) The mixed material prepared in step (1) is granulated through a disc granulation proce...

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Abstract

The invention relates to a sustained-control-released water-retention multifunctional nitrogen fertilizer and a preparation method thereof. The sustained-control-release water-retention multifunctional nitrogen fertilizer comprises the following raw material components by weight part: 1-20 parts of tripolycyanamide, 8-80 parts of urea, 15-19 parts of ammonium sulfate, 1-40 parts of magnesium sulfate, 0.2-5 parts of zinc sulfate, 0.1-1.0 part of coating agent and 1-20 parts of coating agent solvent. According to the nitrogen fertilizer, tripolycyanamide, urea and ammonium sulfate provide nitrogen sources, and due to the principle that urea and tripolycyanamide can be absorbed by crops after enzymolysis owing to the combination of different molecular weights, different water soluble properties and other physical properties of the raw materials, the ladder-shaped nutrient releasing can be formed, so that the utilization ratio of the nitrogen fertilizer is increased by 75-90%; and coating materials adopt collagen, chitin, polyacrylamide, C12 fatty alcohol polyoxyethylene (3) ether ammonium sulfate (C18H41NO7S) and has the functions of sterilization, adversity resistance, water retention and no deep ploughing.

Description

technical field [0001] The invention relates to a slow-controlled release water-retaining multifunctional nitrogen fertilizer and a preparation method thereof, belonging to the technical field of slow-control release fertilizers. Background technique [0002] Norman E. Borlaug, a famous breeder and a Nobel Prize winner who made outstanding contributions to the "Green Revolution", asserted in 1994 after a comprehensive analysis of various factors related to the development of agricultural production since the 20th century: "The world's crop production in the 20th century Half of the increase came from the application of chemical fertilizers." According to the data of the Food and Agriculture Organization of the United Nations (FAO), the contribution rate of chemical fertilizers to food production accounts for about 40%. According to a large number of experimental results of the National Fertilizer Experiment Network, the application of chemical fertilizers can increase the y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 杜延全
Owner 佳木斯恺乐农业生物工程有限公司