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Stereoscopic fertilizer-control moisture-retention multifunctional novel slow-release fertilizer and preparation method thereof

A slow-release fertilizer and multi-functional technology, applied in the direction of inorganic fertilizers, ammonium salt fertilizers, nitrate fertilizers, etc., can solve the problems of increased cost, inability to absorb water and retain water, slow release of water, and inability to effectively delay the solubility of fertilizers, etc., to achieve The effect of increasing the storage capacity and enhancing the ability of drought resistance

Active Publication Date: 2017-05-31
KUNMING ZHONGYOU FENGYU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Directly mix the polymer organic carrier such as polyvinyl alcohol, polyethylene glycol with the fertilizer solution, and only part of the fertilizer molecules can be polymerized with the polymer material through the cross-linking agent. It is necessary to increase the amount of carrier substances and cross-linking agents to increase the fertilizer. load, but the cost has also increased; at the same time, the polymer carrier used has a certain solubility in water, and the release rate of fertilizer nutrients is relatively fast, which cannot effectively delay the solubility of the fertilizer; the polymer carrier has a certain solubility in water , unable to absorb, retain and release water

Method used

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  • Stereoscopic fertilizer-control moisture-retention multifunctional novel slow-release fertilizer and preparation method thereof
  • Stereoscopic fertilizer-control moisture-retention multifunctional novel slow-release fertilizer and preparation method thereof
  • Stereoscopic fertilizer-control moisture-retention multifunctional novel slow-release fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The urea of ​​25 parts by weight, the potassium nitrate of 40 parts by weight, the potassium dihydrogen phosphate of 30 parts by weight, the ammonium dihydrogen phosphate of 5 parts by weight, the water-soluble chitin (chitosan) of 4 parts by weight are mixed uniformly, join in 200 parts by weight of water, stirred to make it fully dissolved, forming a fertilizer solution A with a concentration of 34.2%;

[0047] Add 30 parts by weight of acrylamide and 60 parts by weight of acrylic acid to 80 parts by weight of water to dissolve, and adjust the pH value to 6.5-7.5 with 30% sodium hydroxide solution to form a polymerized monomer solution B with a concentration of about 41%. ;

[0048] 4 parts by weight of peach gum are added to 15 parts by weight of water for dissolution to form a functional additive solution C with a concentration of 21%;

[0049] Mix the prepared solutions A, B, and C evenly, then adjust the pH value to 6.5-7.5 with a pH regulator, and then add N,N'-...

Embodiment 2

[0051] The urea of ​​55 parts by weight, the potassium nitrate of 90 parts by weight, the potassium dihydrogen phosphate of 50 parts by weight, the ammonium dihydrogen phosphate of 15 parts by weight, the sodium selenate of 1 part by weight, the ammonium molybdate of 5 parts by weight, the ammonium molybdate of 15 parts by weight The magnesium sulfate of 1,000,000,000,000,000,000,000,000,000,0,0,0,0,0, and / or 1,000,000,000,000,0,0,0,0, and and / or 1,000,000,000,000,0,0,0,0,0,0, and and / or 1,000,000,000,0,0,0,0,0,0,0,0,0,0,,,,,,,,, and and and and even portion of water parts is mixed uniformly, and is stirred to fully dissolve to form a fertilizer solution A with a concentration of 43.5%;

[0052] Add 60 parts by weight of acrylamide and 30 parts by weight of acrylic acid to 80 parts by weight of water to dissolve, and adjust the pH value to 6.5 to 7.5 with 50% sodium hydroxide solution to form a polymerized monomer solution B with a concentration of about 45%. ;

[0053] Mix th...

Embodiment 3

[0055] The urea of ​​55 parts by weight, the potassium nitrate of 90 parts by weight, the potassium dihydrogen phosphate of 50 parts by weight, the ammonium dihydrogen phosphate of 15 parts by weight, the sodium selenate of 1 part by weight, the ammonium molybdate of 5 parts by weight, the ammonium molybdate of 15 parts by weight Parts of magnesium sulfate, 4 parts by weight of water-soluble chitin (chitosan) are mixed uniformly, added to 300 parts by weight of water, stirred to make it fully dissolved, forming a fertilizer solution A with a concentration of 44%;

[0056] Add 60 parts by weight of acrylamide and 30 parts by weight of acrylic acid to 80 parts by weight of water to dissolve, and adjust the pH value to 6.5 to 7.5 with 50% sodium hydroxide solution to form a polymerized monomer solution B with a concentration of about 45%. ;

[0057] 4 parts by weight of peach gum are added to 15 parts by weight of water for dissolution to form a functional additive solution C wit...

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Abstract

The invention discloses a stereoscopic fertilizer-control moisture-retention multifunctional novel slow-release fertilizer and a preparation method thereof. The slow-release fertilizer is prepared by mixing and reacting the following raw materials in parts by weight in water: 5-7 parts of acrylamide, 1.5-3 parts of acrylic acid, 0.5-2 parts of functional additive, 0.01-0.03 part of reaction aid and 12-25 parts of inorganic fertilizer. The functional additive is composed of at least one peach gum, jandagum, tamarind seed gum and flaxseed gum. The stereoscopic network space structure formed by the substrate has high loading capacity for the fertilizer (more than 150% of the substrate); the substrate can absorb and store abundant moisture, and can control the moisture and nutrient to be slowly released; and the substrate has favorable degradability in soil, thereby achieving the goal of fully utilizing the water and fertilizer and protecting the environment, and providing balanced nutrients for plants.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, in particular to a novel slow-release fertilizer with three-dimensional fertilizer control and water retention and a preparation method thereof. Background technique [0002] Farming proverb: "Whether there is a harvest or not depends on the water, and more or less depends on the fertilizer." These two agricultural proverbs brilliantly expound the importance of water and fertilizer in agriculture and their relationship. If there is no water, crops cannot survive at all, and there is no harvest; even if there is sufficient rain, if the land is very barren and not fertile, and artificial fertilization is not carried out, the yield and quality will inevitably decline. On the one hand, my country’s water resources are in short supply, and the drought problem is becoming more and more serious, especially the contradiction between the supply and demand of agricultural water resources ...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/02C05G3/00C08F220/56C08F220/06C05G3/60C05G3/80
CPCC05B7/00C05G3/00C05G3/60C05G3/80C08F220/56C08F220/06C05C3/00C05C5/02C05C9/00C05D9/00C05D5/00
Inventor 周密刘玉贵张沛钦王荣安林萍萍杨光李自让
Owner KUNMING ZHONGYOU FENGYU TECH
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