Microencapsulated selenium-enriched fertilizer for basal application of rice and preparation method of microencapsulated selenium-enriched fertilizer

A technology of microencapsulation and selenium-enriched fertilizers, which is applied in fertilization devices, nitrogen fertilizers, and potassium fertilizers, etc., can solve problems affecting the promotion of selenium-enriched fertilizers in the base application, hidden safety hazards, and the inability to transfer selenium elements, so as to improve the fertilization effect and promote Development and growth, and the effect of improving the embedding rate

Inactive Publication Date: 2017-07-21
安徽康坶国际化肥股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, selenium-enriched fertilizers can be divided into foliar selenium-enriched fertilizers and basal selenium-enriched fertilizers according to the different fertilization methods. certain security risks
Due to the curing effect of selenium on the roots, the inability of selenium to be transported to the stems and leaves has always been an important factor affecting the promotion of selenium-enriched fertilizers.

Method used

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  • Microencapsulated selenium-enriched fertilizer for basal application of rice and preparation method of microencapsulated selenium-enriched fertilizer

Examples

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Effect test

Embodiment 1

[0024] A rice-based microencapsulated selenium-enriched fertilizer, including a core material and a wall material, the weight ratio of the core material and the wall material is 70:30; wherein, the composition of the core material raw materials includes: selenium fertilizer, sulfate, nitrogen fertilizer, potassium fertilizer, Phosphate fertilizer, biological bacteria, peat, and trace element additives, and the wall material is modified rice dreg protein.

Embodiment 2

[0026] A rice-based microencapsulated selenium-rich fertilizer, including a core material and a wall material, the weight ratio of the core material and the wall material is 80:20; wherein, the composition of the core material raw materials includes: selenium fertilizer, sulfate, nitrogen fertilizer, potassium fertilizer, Phosphate fertilizer, biological bacteria, peat, trace element additives, the wall material is modified rice dregs protein; selenium fertilizer is selenate and selenite; sulfate is potassium sulfide and ammonium sulfate, and the molar ratio of selenium fertilizer to sulfate is 1.2:4.

Embodiment 3

[0028] A rice-based microencapsulated selenium-rich fertilizer, including a core material and a wall material, the weight ratio of the core material and the wall material is 72:25; wherein, the composition of the core material raw materials includes: selenium fertilizer, sulfate, nitrogen fertilizer, potassium fertilizer, Phosphate fertilizer, biological bacteria, peat, trace element additives, wall material is modified rice dregs protein; selenium fertilizer is selenate and selenite; sulfate is magnesium sulfate, and the molar ratio of selenium fertilizer to sulfate is 3.5:5 ; In rice-based microencapsulated selenium-enriched fertilizer, the nitrogen content is 13wt%, K 2 O content is 15wt%, P 2 o 5 The content is 17wt%, and the selenium content is 0.8wt%. The biological bacteria are Bacillus subtilis and Pseudomonas fluorescens. The trace element additives include iron, copper, zinc, manganese, cobalt, manganese and iodine.

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Abstract

The invention discloses microencapsulated selenium-enriched fertilizer for basal application of rice. The microencapsulated selenium-enriched fertilizer comprises a core material and a wall material. The weight ratio of the core material to the wall material is (70-80): (20-30). The core material comprises selenium fertilizer, sulfate, nitrogenous fertilizer, potassic fertilizer, phosphate fertilizer, biological bacteria, peat and microelement additives. The wall material comprises modified rice residue albumen. The invention further discloses a preparation method of the microencapsulated selenium-enriched fertilizer for basal application of the rice. The microencapsulated selenium-enriched fertilizer has the advantages that a microencapsulation technology is adopted, the modified rice residue albumen serves as the wall material, and the sulfate is added into the core material to be applied with the selenium fertilizer, so that selenium absorption of rice roots and upward transfer of selenium are improved, fixation of the selenium is avoided, and selenium utilization rate is increased; fertilizer efficiency of microcapsules is released slowly, and accordingly, crop's need for nutrition in each growth stage is met.

Description

technical field [0001] The invention relates to the technical field of selenium-enriched fertilizers, in particular to a rice-based microencapsulated selenium-enriched fertilizer and a preparation method thereof. Background technique [0002] Selenium is an important component of some antioxidant enzymes and selenoproteins in the human body. Studies have shown that selenium has a variety of important physiological functions, such as the protection of cardiovascular and myocardial health, anti-oxidation, anti-cancer and anti-cancer. Selenium deficiency in the human body can lead to various diseases such as Keshan disease, cardiovascular and cerebrovascular diseases, cancer, and high blood pressure. Selenium cannot be produced in the body, and the selenium needed by the human body can only be taken in from food. 72% of China's areas are selenium-deficient or low-selenium areas, and about two-thirds of the country's population has insufficient selenium intake to varying degre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B17/00C05C3/00C05D9/02C05G5/30C05F11/02C05F11/08C05D1/00C05D5/00
Inventor 房兴林房晓涛
Owner 安徽康坶国际化肥股份有限公司
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