Selenium-rich slow release coated urea

A slow-release bag and urea technology, which is applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of low utilization rate of urea nitrogen, and achieve the effects of prolonging the use period of fertilizer efficiency, strengthening plants, and enhancing absorption

Active Publication Date: 2013-12-25
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention solves the technical problem of low utilization rate of urea nitrogen in existing fertilizers; and provides a selenium-enriched slow-release coated urea

Method used

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  • Selenium-rich slow release coated urea

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Effect test

specific Embodiment approach 1

[0011] Specific embodiment one: in this embodiment, a kind of selenium-enriched slow-release coated urea is a granule formed by wrapping the fertilizer core with cold-soluble polyvinyl alcohol as a binder and bentonite as a coating material; the bentonite is The weight of the fertilizer core is 2%-5%, and the fertilizer core comprises 15-35 parts of urea, 5-10 parts of antibacterial peptide and 10-20 parts of chelated selenium according to the ratio of parts by weight.

[0012] The total validity period of the fertilizer described in this embodiment reaches 180-260 days. In this embodiment, the fertilizer utilization rate is increased to 30%-40%, and the fertilizer consumption is reduced by 20%-33%. Using the present embodiment under the condition of the same amount of fertilizer can increase grain production by 15-30%, vegetables by 20-50%, and economic crops by more than 20%.

specific Embodiment approach 2

[0013] Embodiment 2: This embodiment differs from Embodiment 1 in that: the bentonite is 3% of the mass of the fertilizer core. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Embodiment 3: This embodiment is different from Embodiment 1 in that: the bentonite is 3.5% of the weight of the fertilizer core. Others are the same as in the first embodiment.

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Abstract

The invention discloses selenium-rich slow release coated urea, which belongs to the field of fertilizers and solves the technical problem of low utilization rate of urea nitrogen in the conventional fertilizer. The selenium-rich slow release coated urea is a particulate matter formed by wrapping fertilizer core in bentonite serving as a covering material by taking cold-soluble polyving akohol as an adhesive, wherein the mass of the bentonite is 2-5 percent of that of the fertilizer core; and the fertilizer core consists of the following components in parts by weight: 15-35 parts of urea, 5-10 parts of antibacterial peptide and 10-20 parts of selenium chelate. According to the selenium-rich slow release coated urea, the absorption and utilization effect of the crops on nitrogen can be obviously improved, the adsorption of plants to the nitrogen and other nutrient elements is enhanced, the utilization rate of the fertilizer is obviously improved and is improved to 30-40 percent, and the amount of the used fertilizer is reduced by 20-33 percent. By using the selenium-rich slow release coated urea, the yield of grain can be increased by 15-30 percent, the yield of vegetables is increased by 20-50 percent, and the yield of economic crops is increased by over 20 percent under the condition of an equal amount of fertilizer.

Description

technical field [0001] The invention belongs to the field of fertilizers, in particular to a selenium-enriched slow-release coated urea. Background technique [0002] Urea has high fertilizer efficiency, long duration, stable fertilizer supply, and does not damage the soil. It is an ideal variety of nitrogen fertilizers at present. At present, the common urea used in industrial production and agriculture is an instant fertilizer, which has a short fertilizer effect period and low fertilizer nitrogen utilization rate. The total utilization rate of urea nitrogen is only 30% to 35%. Contents of the invention [0003] The invention aims to solve the technical problem of low utilization rate of urea nitrogen in the existing fertilizer, and provides a selenium-enriched slow-release coated urea. [0004] In the present invention, a selenium-enriched slow-release coated urea is a particle formed by wrapping a fertilizer core with cold-soluble polyvinyl alcohol as a binder and ben...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 曲琪环
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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