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Nanometer vanadium-selenium sustained and controlled release fertilizer and preparation method thereof

A slow and controlled release fertilizer, nanotechnology, applied in the direction of fertilization device, fertilizer mixture, application, etc., to improve the utilization level, promote scientific fertilization, and reduce the use of fertilizers

Inactive Publication Date: 2014-09-17
HUNAN TIANJIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Another technical problem to be solved by the present invention is to provide a preparation method of nano-vanadium-selenide slow-release fertilizer

Method used

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  • Nanometer vanadium-selenium sustained and controlled release fertilizer and preparation method thereof
  • Nanometer vanadium-selenium sustained and controlled release fertilizer and preparation method thereof
  • Nanometer vanadium-selenium sustained and controlled release fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, take 32 parts by weight of urea, 8 parts of diammonium phosphate, 22 parts of potassium sulfate, 20 parts of humic acid, 0.5 part of vanadium pentoxide, 1.5 parts of sodium selenite, 13 parts of natural polymer nano-carrier shell, package 3 parts of film agent, respectively standby;

[0026] Secondly, the spare vanadium pentoxide and sodium selenite are stirred evenly, and after oxidation-reduction reaction, the mixed solution of vanadium pentoxide and sodium selenite is obtained after filtration, and then vanadium and selenium nanoparticles are obtained through precipitation, and then mixed with natural The polymer nano-carrier shell (chitooligosaccharide, starch, etc.) is mixed and stirred evenly, and through a chemical reaction, a nano-vanadium and selenium slow-release body is prepared for use;

[0027] Thirdly, the spare nano-vanadium, selenium slow-controlled release body is fully mixed with urea, diammonium phosphate, potassium sulfate, and humic acid, and...

Embodiment 2

[0041] First, take 20 parts by weight of urea, 18 parts of diammonium phosphate, 12 parts of potassium sulfate, 40 parts of humic acid, 1.5 parts of vanadium pentoxide, 0.5 parts of sodium selenite, 7 parts of natural polymer nano-carrier shell, package 1 part of film agent, set aside separately;

[0042] The second to fourth steps are the same as in Embodiment 1.

Embodiment 3

[0044] First, take 26 parts by weight of urea, 13 parts of diammonium phosphate, 17 parts of potassium sulfate, 30 parts of humic acid, 1 part of vanadium pentoxide, 1 part of sodium selenite, 10 parts of natural polymer nano-carrier shell, package 2 parts of film agent, separately for standby;

[0045] The second to fourth steps are the same as in Embodiment 1.

[0046] The nano-vanadium-selenide slow-release fertilizer of the present invention can be used not only for grain and oil crops such as rice, cotton and rape, but also for economic crops such as tea, watermelon and tobacco, and fruit crops such as citrus, grapes and pears. When applying, the base fertilizer is mainly used for deep application, and it can also be used as top dressing or foliar spraying with water.

[0047] Nano vanadium selenium slow-controlled release fertilizer of the present invention, its method of use, scope and matters needing attention are as follows:

[0048]

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Abstract

The invention discloses a nanometer vanadium-selenium sustained and controlled release fertilizer and a preparation method thereof. The nanometer vanadium-selenium sustained and controlled release fertilizer is prepared by mixing the following raw materials, by weight, 20-32 parts of urea, 8-18 parts of diammonium phosphate, 12-22 parts of potassium sulfate, 20-40 parts of humic acid, 0.5-1.5 parts of vanadium pentoxide, 0.5-1.5 parts of sodium selenite, 7-13 parts of a natural polymer nanometer carrier shell and 1-3 parts of a coating agent. The nanometer vanadium-selenium sustained and controlled release fertilizer has the advantages of good controlled and slow release property, high utilization rate, containing of a proper amount of vanadium and selenium, great improvement of the yield and quality of crops, increase of the fertilizer utilization rate by 10-15%, increase of the crop yield by above 10%, effective reduction of the consumption of a chemical fertilizer, reduction of pollution caused by the excessive application of the chemical fertilizer, promotion of the agricultural scientific fertilization, and safe fertilization; and agricultural products produced by using the nanometer vanadium-selenium sustained and controlled release fertilizer have very obvious health functions of cancer prevention, blood sugar reduction, and cardiovascular and cerebrovascular disease prevention.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a nano vanadium selenium slow and controlled release fertilizer and a preparation method thereof. Background technique [0002] The total annual consumption of chemical fertilizers in my country is more than 41 million tons (pure nutrients), ranking first in the world; however, nutrients are seriously lost in the field, and the seasonal utilization rate is only 35%-40%, which is 15%-20% lower than that of developed countries. %. Agronomic measures can improve the utilization rate of fertilizer to some extent, but they cannot solve the fundamental problem. Scientists have found that the slow and controlled release of nutrients is an effective way to improve the utilization rate of fertilizers. Therefore, the research and development of various slow and controlled release fertilizers has become an important research topic in current fertilizer science. Contents o...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 文贻荣黄生博
Owner HUNAN TIANJIN TECH
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