It is understood that Anhui Science and Technology University cooperated with enterprises to declare the establishment of a state-level key laboratory for the creation of bio-organic fertilizers and to study the core technologies for converting straw into bio-char and then producing organic fertilizer. One of the companies that cooperated with the Anhui Science and Technology Institute converted more than 50,000 mu of straw and produced more than 14,000 tons of activated carbon.
In addition to bio-char technology, the laboratory also turned straw into a straw decomposer through high-temperature compost fermentation to directly achieve straw return. According to statistics, 1 ton of straw can produce 1 to 1.2 tons of bio-organic fertilizer. Farmers use this kind of organic fertilizer to reduce fertilizer input by 30% and increase production by 20%, which can increase income by 150 yuan per mu.
Using advanced compost fermentation technology to inoculate high-speed and efficient golden treasure
Straw fermentation bacterium makes the straw cellulose rapidly decompose and transform, all kinds of pathogenic bacteria, weed seeds and aphid eggs are killed, and the production of bio-organic fertilizer with strong stability and complete nutrient types. Bio-organic fertilizers produced from straw and manure contain large quantities of nitrogen, phosphorus, and potassium needed for crop growth. They also contain trace elements such as sulfur, calcium, magnesium, zinc, boron, molybdenum, copper, and iron, and are mostly organic. Form exists. It can not only meet the needs of crop growth, but also improve the adaptability of crops to adverse environments.
Compared with chemical fertilizers, organic fertilizers have the characteristics of no fertilizer, no shortage of nutrients, stable supply and long-term efficacy. It can not only make the straw waste harmless, but also increase the production and efficiency through the biological organic fertilizer, and achieve the unity of ecological benefits and economic benefits. Under normal circumstances, applying this fertilizer can increase the crop yield by 5 to 20%. Due to the high utilization rate of organic fertilizer, nitrogen can reach 70-80% and phosphorus can reach 80-90%.
Therefore, compared with chemical fertilizers, fertilizer production can be reduced by 30% to 40% while ensuring the same yield, that is, reducing input by 20 to 50 yuan/mu. Technical points:
(1) Straw treatment First, the straw should be crushed to a certain degree of fineness, and then raw materials such as poultry urine or sludge must be added to the raw materials to adjust the ratio of carbon to nitrogen and moisture of the compost materials, or to add strains and enzymes. .
(2) Fermentation is divided into two stages: First, pre-fermentation can be carried out in open air or in a fermentation plant, and oxygen is supplied to the accumulation layer or the fermentation device by means of forced-air ventilation, and straw-based animal manure is added. The main fermentation period of oxygen compost is about 3 to 10 days. The second is post-fermentation. After the semi-finished products from the main fermentation are sent to the post-fermentation process, the undecomposed organic substances that have not been decomposed in the main fermentation process and the organic compounds that are more difficult to decompose are further decomposed to become stable organic substances such as humic acids and amino acids. Completely decomposed organic fertilizer products usually have a post-fermentation time of 20 to 30 days or more.
(3) After treatment, it can be further dried and crushed as needed, and then processed into crop-specific organic-inorganic compound fertilizers.
(4) Storage Compost is generally used in spring and autumn. It must be stored in summer and winter. The storage method can be piled directly in the fermentation tank or in bags, requiring dry and breathable. Appropriate area: This technology can be popularized in China's food-producing areas with limited straw resources and areas with limited environmental capacity, and is particularly suitable for use in urban-rural areas where environmental issues are more prominent.
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