Selenium-enriched microbial organic fertilizer and preparation method thereof

Abstract

The invention discloses a selenium-enriched microbial organic fertilizer and a preparation method thereof. The selenium-enriched microbial organic fertilizer comprises the following raw materials in parts by weight: 12-18 parts of a pre-fermented material, 6-10 parts of mineral substances, 0.5-0.8 part of bacillus subtilis 10147, 30-40 parts of edible mushroom leftovers, 5-10 parts of kiln dust and 15-20 parts of biogas water; the pre-fermented material comprises the following raw materials in parts by weight: 10-20 parts of fly maggots, 1-3 parts of biogas water, 3-5 parts of molasses, 0.1-0.2 part of sodium selenite and 0.1-0.2 part of bacillus subtilis 10147; the mineral substances comprise the following raw materials in parts by weight: 40-60 parts of powdered rock phosphate, 40-60 parts of coal gangue and 1-3 parts of silicon powder. The bacillus subtilis 10147 is adopted in the selenium-enriched microbial organic fertilizer disclosed by the invention to enrich a large amount of organic selenium in the organic fertilizer; in addition, the organic fertilizer has the functions of improving soil, preventing diseases and protecting the environment, and thus great convenience is brought to agricultural production.

Description

technical field [0001] The invention relates to an organic fertilizer, in particular to a selenium-enriched microbial organic fertilizer and a preparation method thereof. Background technique [0002] Agricultural pollution has become the largest environmental pollution in our country. Now the organic matter content of soil in our country is decreasing from 7% to 11% in the early days of the founding of the People's Republic of China to below 3%. The vicious cycle of the waste caused irreparable losses. Every year in the busy season of summer harvest and autumn, the utilization efficiency of straw and other organic resources is very low. It is often solved by simple and trouble-free incineration, which burns the surface of the soil, wastes resources and pollutes Excessive use of chemical fertilizers, undecomposed and unabsorbed nutrients by rainwater will flow into rivers and lakes, resulting in excess nutrients in water quality and serious pollution. Extensive use of ch...

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Problems solved by technology

[0002] Agricultural pollution has become the largest environmental pollution in our country. Now the organic matter content of soil in our country is decreasing from 7% to 11% in the early days of the founding of the People's Republic of China to below 3%. The vicious cycle of the waste caused irreparable losses. Every year in the busy season of summer harvest and autumn, the utilization efficiency of straw and other organic resources is very low. It is often solved by simple and trouble-free incineration, which burns the surface of the soil, wastes resources and pollutes Excessive use of chemical fertilizers, undecomposed and unabsorbed nutrients by rainwater will flow into rivers and lakes, resulting in excess nutrients in water quality and serious pollution. Extensive use of chemical fertilizers and pesticides will pollute agricultural products and leave a legacy for human survival and life. There are hidden dangers. Heavy metal pollution in the soil exceeds the standard. Although chemical fertilizers can supplement enough nutrients for the soil, they ignore the supply of organic matter. If chemical fertilizers are used alone for a long time, the soil will have adverse effects on soil quality and the environment. Under the condition of sufficient organic matter, the aggregate structure is difficult to form, and the adhesion between soil particles is weakened, thereby reducing the water retention capacity of the soil. When the soil does not have enough water, even if the fertilizer quality is high, it is not easy to absorb nutrients in a favorable environment. In addition, the excessive application of chemical fertilizers will also have a serious impact on the environment. When excessive chemical fertilizers are applied, the nutrients that are not absorbed by the soil will be lost with the water. entire ecosystem

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