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Slow-release synergistic phosphate fertilizer as well as preparation method and application thereof

A phosphate fertilizer and slow-release technology, which is applied in the field of slow-release and synergistic phosphate fertilizer and its preparation, can solve the problems of limited ability to release phosphorus and improve phosphorus utilization, low cost, and single action form, so as to promote the formation of soil aggregate structure , Enhanced chelating ability, improved water solubility

Active Publication Date: 2020-12-04
STANLEY AGRI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, common ways to improve phosphorus utilization include adding exogenous organic acids, using humic acid, alginic acid or polyglutamic acid as synergistic phosphate fertilizers, phosphorus-dissolving microbial fertilizers, etc., which are low in cost and non-polluting to the environment, but have a single form of action , has limited ability to release phosphorus from the soil and improve phosphorus availability

Method used

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  • Slow-release synergistic phosphate fertilizer as well as preparation method and application thereof
  • Slow-release synergistic phosphate fertilizer as well as preparation method and application thereof
  • Slow-release synergistic phosphate fertilizer as well as preparation method and application thereof

Examples

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preparation example Construction

[0060] In the present invention, alginic acid is prepared by biological enzymatic hydrolysis, and the preparation method of alginic acid includes: selecting high-quality seaweed, and using one or more of the three types of seaweed, red algae, brown algae, and green algae; cutting off the dried seaweed Soak for one time, after cleaning for the second time, chop and transport it into the extraction tank, add 100kg of kelp, 500kg of water, and 300g of extraction enzyme into the extraction tank; the temperature in the fermentation tank is 30-55°C, pH4-8, and the extraction time is 2- 4 hours; the seaweed extraction rate is 40-50%; the extraction enzymes are pectinase, alkaline pectinase, cellulase and protease, and the ratio of use is 1.07:1.3:10:4; the seaweed after enzyme extraction The biological macromolecules are completely degraded into small molecular effective active substances. The alginic acid produced by this process is rich in various algae polysaccharides, amino acid p...

Embodiment 1

[0064] The slow-release and synergistic phosphate fertilizer provided in this example includes monoammonium phosphate, polyglutamic acid, activated humic acid, alginic acid, and polyacrylamide in the core; and chitosan oligosaccharide, sulfur, citric acid, and tartaric acid in the shell. Recipe: the content of powdered monoammonium phosphate is 85 parts by weight, 0.6 parts by weight of citric acid, 0.6 parts by weight of tartaric acid, 2 parts by weight of sulfur, 0.2 parts by weight of chitosan oligosaccharide, 8 parts by weight of activated humic acid, and 0.3 parts by weight of polyacrylamide , 1 part by weight of alginic acid, and 5 parts by weight of polyglutamic acid.

[0065] The preparation of the slow-release synergistic phosphate fertilizer that present embodiment provides:

[0066] (1) Add powdered monoammonium phosphate, activated humic acid, polyacrylamide, alginic acid and polyglutamic acid to the drum granulator according to the above parts by weight, and add 3...

Embodiment 2

[0071] The slow-release and synergistic phosphate fertilizer provided in this example includes monoammonium phosphate, polyglutamic acid, activated humic acid, alginic acid, and polyacrylamide in the core; and chitosan oligosaccharide, sulfur, citric acid, and tartaric acid in the shell. The content of powdered monoammonium phosphate is 88 parts by weight, 0.6 parts by weight of citric acid, 0.6 parts by weight of tartaric acid, 2 parts by weight of sulfur, 0.2 parts by weight of chitosan oligosaccharide, 6 parts by weight of activated humic acid, 0.3 parts by weight of polyacrylamide, seaweed 1 weight part of acid, 4 weight parts of polyglutamic acid.

[0072] According to steps (1)-(4) in Example 1, a slow-release and synergistic phosphate fertilizer is obtained.

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Abstract

The invention relates to a slow-release synergistic phosphate fertilizer as well as a preparation method and application thereof. The slow-release synergistic phosphate fertilizer has a core-shell structure, the core is prepared from phosphate fertilizer, polyglutamic acid, activated humic acid, alginic acid and polyacrylamide, and the shell is prepared from chitosan oligosaccharide, sulfur, citric acid and tartaric acid, wherein the mass ratio of the phosphate fertilizer to the polyglutamic acid to the activated humic acid to the alginic acid to the polyacrylamide is (80-100):(0.1-10):(0.1-10):(0.1-5):(0.1-5), and the mass ratio of the chitosan oligosaccharide to the sulfur to the citric acid to the tartaric acid is (0.1-4):(0.1-4):(0.1-3):(0.1-3). The raw materials which are biodegradable, chelated, capable of improving the soil structure and high in pertinence are added into the phosphate fertilizer, so that the phosphate fertilizer is good in effect, high in utilization rate, capable of meeting the requirements of various crops for phosphorus, capable of being mixed with other fertilizers for use, suitable for all stages of crops, safe in production, low in energy consumption and free of secondary pollution.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a slow-release and synergistic phosphate fertilizer and a preparation method and application thereof. Background technique [0002] Phosphorus is an important essential nutrient element for plants, an important substance that participates in the composition of compounds in plants, and plays an important role in plant growth and development. The total content of phosphorus in the soil is 0.2-0.02%. Most of the phosphorus needed by plants comes from soil absorption, but phosphorus is easily fixed and adsorbed in the soil, and the utilization rate is low. [0003] Currently, the seasonal utilization rate of phosphate fertilizer is 10-20%. The soil contacted by crop roots is limited, accounting for only 4-10% of the soil in the plow layer. Phosphorus can only move 1-3cm in the soil, and phosphorus is easily fixed during the movement, which also limits the absorption of phosphoru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/40C05G3/80C05G5/12C05G5/30
CPCC05G3/00C05G3/80C05G3/40C05G5/12C05G5/30C05B7/00C05C9/00C05D9/00C05F11/00C05F11/02
Inventor 高进华姚然张广忠徐勤政崔然
Owner STANLEY AGRI GRP CO LTD
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