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Accurate controlled-release microelement fertilizer and application thereof

A micro-fertilizer and precise technology, applied in the field of controlled-release fertilizers, can solve the problems of small increase in fertilizer utilization rate, limited micro-fertilizer utilization rate, and difficulty in precise release of fertilizers, so as to improve absorption and utilization rate and meet growth and functional nutrient elements. Precise effect of accumulation and release of fertilizer

Active Publication Date: 2022-07-12
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two problems in the current slow-release strategy: 1) slow-release fertilizers usually have a short slow-release period, and are generally released within 10 days, and the utilization rate of fertilizers is relatively small (Bai Tian et al., 2015); 2) it is difficult to do To provide precise release fertilizers according to the law of fertilizer needs of crops, the demand or absorption of micro-fertilizers by vegetables is generally "weak at both ends and strong in the middle". However, the current slow-release fertilizers are usually released in the early stage, which further limits the use of micro-fertilizers Rate

Method used

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  • Accurate controlled-release microelement fertilizer and application thereof
  • Accurate controlled-release microelement fertilizer and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A precise controlled-release micro-fertilizer, comprising the following raw materials and mass percentages: 11% of manganese sulfate monohydrate round particle micro-fertilizer, 39% of thin polyacrylate-coated manganese sulfate monohydrate micro-fertilizer, thick polyacrylate-coated monohydrate Manganese sulfate micro-fertilizer 31%, sodium alginate combined with polyvinyl alcohol-coated manganese sulfate micro-fertilizer 19%.

[0028] The preparation method of the thin polyacrylate-coated manganese sulfate monohydrate micro-fertilizer, comprising the following steps: using the manganese sulfate monohydrate round particle micro-fertilizer with a particle size of 3 mm as the fertilizer core, the fertilizer core and the polyacrylate emulsion in a mass ratio of 5 : 1 ratio to encapsulate, that is.

[0029] The preparation method of the thick polyacrylate-coated manganese sulfate monohydrate micro-fertilizer, comprising the following steps: using the manganese sulfate monoh...

Embodiment 2

[0036] A precise controlled-release micro-fertilizer, comprising the following raw materials and mass percentages: 10% of manganese sulfate monohydrate round particle micro-fertilizer, 40% of thin polyacrylate-coated manganese sulfate monohydrate micro-fertilizer, and thick polyacrylate-coated monohydrate Manganese sulfate micro-fertilizer 30%, sodium alginate combined with polyvinyl alcohol-coated manganese sulfate micro-fertilizer 20%.

[0037] The preparation method of the thin polyacrylate-coated manganese sulfate monohydrate micro-fertilizer, comprising the following steps: using the manganese sulfate monohydrate round particle micro-fertilizer with a particle size of 3 mm as the fertilizer core, the fertilizer core and the polyacrylate emulsion in a mass ratio of 4 : 1 ratio to encapsulate, that is.

[0038] The preparation method of the thick polyacrylate-coated manganese sulfate monohydrate micro-fertilizer, comprising the following steps: using the manganese sulfate m...

Embodiment 3

[0047] A precise controlled-release micro-fertilizer, comprising the following raw materials and mass percentages: 8% zinc sulfate heptahydrate round particle micro-fertilizer, 38% thin polyacrylate-coated zinc sulfate heptahydrate micro-fertilizer, and thick polyacrylate-coated heptahydrate Zinc sulfate micro-fertilizer 32%, sodium alginate combined with polyvinyl alcohol-coated zinc sulfate micro-fertilizer 22%.

[0048] The preparation method of the thin polyacrylate coated zinc sulfate heptahydrate micro-fertilizer, comprising the following steps: using the zinc sulfate heptahydrate round particle micro-fertilizer with a particle diameter of 3 mm as the fertilizer core, the fertilizer core and the polyacrylate emulsion in a mass ratio of 4 : 1 ratio to encapsulate, that is.

[0049] The preparation method of the thick polyacrylate-coated zinc sulfate heptahydrate micro-fertilizer, comprising the following steps: using the zinc sulfate heptahydrate micro-fertilizer with a p...

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Abstract

The invention relates to the technical field of controlled-release fertilizers, in particular to a precise controlled-release microelement fertilizer and application thereof. The precise controlled-release microelement fertilizer is prepared from the following raw materials in percentage by mass: 8 to 12 percent of microelement fertilizer, 38 to 42 percent of thin polyacrylate coated microelement fertilizer, 27 to 33 percent of thick polyacrylate coated microelement fertilizer and 18 to 22 percent of sodium alginate combined polyvinyl alcohol coated microelement fertilizer. The controlled-release microelement fertilizer is longer in slow release time, the slow release time is as long as 25-30 days, the fertilizer release rule is more accurate, 15-20% of microelement fertilizer is released in the 4th-6th day after fertilization, 25-30% of microelement fertilizer is released in the 7th-12th day after fertilization, 33-37% of microelement fertilizer is released in the 13th-20th day after fertilization, 18-22% of microelement fertilizer is released in the 21th-30th day after fertilization, and the requirement rule of microelement fertilizer in the growth process of short-growth-period crops can be met.

Description

technical field [0001] The invention relates to the technical field of controlled-release fertilizers, in particular to a precise controlled-release micro-fertilizer and applications thereof. Background technique [0002] With the continuous increase in the input of nitrogen, phosphorus and potassium fertilizers, the agricultural production in my country has continued to increase, and people's demand for "high-yield and safe agriculture" has gradually changed into the demand for "healthy agriculture". The content of zinc, manganese, iron, selenium and other nutrients in plants is a key factor affecting whether agricultural products can provide people with "healthy" functions. However, because traditional agriculture mainly focuses on crop yield and neglects the supplementation of essential trace elements for plants, the problem of "hidden hunger" caused by the lack of trace elements in soil is becoming more and more prominent. Zhao Qiguo, an academician of the Chinese Acade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/40C05G5/30A01C21/00
CPCC05D9/02C05G3/40C05G5/30C05G5/37A01C21/00Y02P60/21
Inventor 黄高翔张臻贺信卢碧敏丁明军
Owner JIANGXI NORMAL UNIV
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