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Selenium-enriched microbial fertilizer and preparation method thereof

A technology of selenium-enriched microorganisms and fertilizers, applied in the direction of microorganism-based methods, biochemical equipment and methods, and the preparation of organic fertilizers, can solve problems such as high processing costs, difficulties in meeting high-concentration wastewater treatment standards, and unbearable production enterprises. Achieve low production cost, enhance the effect of promoting plant growth and reduce production cost

Inactive Publication Date: 2018-09-21
河北丰禾绿光农业科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very difficult to treat these high-concentration wastewater to meet the standards, and the treatment cost is high, which is unbearable for production enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In the present embodiment, the preparation method of selenium-enriched microbial fertilizer comprises the following steps:

[0042] (1) Pretreatment of jujube processing wastewater and preparation of plant growth-promoting bacteria liquid medium

[0043] The COD concentration of the high-concentration jujube processing waste water that COD concentration is 60g / L is adjusted to 50g / L, then adds 0.3% ammonium sulfate, 0.2% dipotassium hydrogen phosphate and 0.3% sodium selenite according to weight ratio, in Heated at 100°C for 5 minutes, then adjusted the pH to 7.5 with lime water to obtain a liquid medium for plant growth-promoting bacteria; among them, ammonium sulfate, dipotassium hydrogen phosphate and sodium arsenite were all based on the percentage of organic matter in the jujube processing wastewater Added, for example COD concentration is that the volume of the jujube processing wastewater of 50g / L is 10L, promptly the organic matter quality in the jujube processi...

Embodiment 2

[0053] In the present embodiment, the preparation method of selenium-enriched microbial fertilizer comprises the following steps:

[0054] (1) Pretreatment of jujube processing wastewater and preparation of plant growth-promoting bacteria liquid medium

[0055] Be that the COD concentration of the high-concentration jujube processing wastewater of 70g / L is adjusted to 40g / L by COD concentration, then add 0.2% ammonium sulfate, 0.1% dipotassium hydrogen phosphate and 0.2% sodium selenite according to weight ratio, in Heated at 90°C for 10 minutes, and then adjusted the pH to 7.2 with lime water to obtain a liquid medium for plant growth-promoting bacteria; among them, ammonium sulfate, dipotassium hydrogen phosphate and sodium arsenite were all based on the percentage of organic matter in the jujube processing wastewater Added, for example COD concentration is that the volume of the jujube processing wastewater of 40g / L is 10L, namely the organic matter quality in the jujube pr...

Embodiment 3

[0065] In the present embodiment, the preparation method of selenium-enriched microbial fertilizer comprises the following steps:

[0066] (1) Pretreatment of jujube processing wastewater and preparation of plant growth-promoting bacteria liquid medium

[0067] The COD concentration of the high-concentration jujube processing waste water that COD concentration is 60g / L is adjusted to 30g / L, then adds 0.5% ammonium sulfate, 0.2% dipotassium hydrogen phosphate and 0.5% sodium selenite according to weight ratio, in Heated at 95°C for 6 minutes, and then adjusted the pH to 8.0 with lime water to obtain a liquid culture medium for plant growth-promoting bacteria; among them, ammonium sulfate, dipotassium hydrogen phosphate and sodium arsenite were all based on the percentage of organic matter in the jujube processing wastewater Added, for example COD concentration is that the volume of the jujube processing wastewater of 30g / L is 10L, promptly the organic matter quality in the juju...

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Abstract

The invention discloses selenium-enriched microbial fertilizer and a preparation method thereof. The method includes the steps of adjusting the COD concentration of red date processing wastewater to 30-60 g / L, adding ammonium sulfate, dipotassium phosphate and sodium arsenite, adjusting the pH value to 7.2-8.0 after heating, and then obtaining a plant growth-promoting bacteria liquid culture medium; inoculating bacillus amyloliquefaciens into the liquid culture medium, and obtaining bacillus amyloliquefaciens liquid seeds after cultivation; inoculating the bacillus amyloliquefaciens liquid seeds into a new liquid culture medium, introducing sterile air for cultivation, and then obtaining a bacillus amyloliquefaciens liquid; adopting excrement of livestock and poultry, mushroom shreds and smashed straw as raw materials of a solid culture medium, adding the bacillus amyloliquefaciens liquid into the raw materials of the solid culture medium, conducting standing and stacking, introducingair for cultivation, and then obtaining a solid fermented product; drying the solid fermented product to obtain the selenium-enriched microbial fertilizer. The production cost is reduced from two aspects including the production raw materials and the production process, and meanwhile, the selenium-enriched microbial fertilizer has the reinforced functions of promoting growth of plants and preventing and treating plant diseases.

Description

technical field [0001] The invention relates to the technical field of microbial fertilizers, in particular to a microbial fertilizer capable of promoting plant growth, preventing and controlling plant diseases, and increasing the selenium content of agricultural products and a preparation method thereof. Background technique [0002] Selenium is one of the essential trace elements for humans and animals, and is also a beneficial element for plant growth and development. Deficiency or excess of selenium can lead to various diseases in the body. At present, the adult intake recommended by the Chinese Nutrition Society is 50-250 micrograms per day, while selenium intake in two-thirds of China is lower than the minimum recommended value. According to statistics, 42 countries and regions in the world are deficient in selenium, and 72% of China is in a selenium-deficient or low-selenium ecological environment. Selenium is an important component of some antioxidant enzymes (glut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05F17/00C12N1/20C12R1/07
CPCC05F3/00C05F17/00C05G3/00C12N1/20C05F5/00C05F11/00C05F11/08Y02W30/40
Inventor 白志辉陈曦崔丙健张换彩赵品胜张邦杰
Owner 河北丰禾绿光农业科技有限公司
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