A method of using earthworms to process livestock and poultry manure waste to produce bio-organic fertilizer

Abstract

The invention belongs to the field of plant nutrition and fertilizers, and discloses a method for producing bio-organic fertilizers by using earthworms to process livestock and poultry manure waste. The main raw material of the invention of the method is the pretreated livestock and poultry manure, and the waste of the livestock and poultry manure is transformed into earthworms and vermicompost bio-organic fertilizers, thereby realizing resource utilization of wastes and developing circular agriculture and circular economy. The rice seedling-raising matrix prepared by using the bio-organic fertilizer of the present invention can improve the quality of the seedlings, prevent the occurrence of rice blight, be more suitable for machine transplanting of rice, and promote the growth of the seedlings in the field. Using the bio-organic fertilizer of the present invention in tea leaves improves the fertility of the soil and promotes the growth and development of tea trees. The tea bud density per unit area is 1.29 times higher than that of chemical fertilizers, and the output per unit area is increased by 56.25%. Tea polyphenols and amino acids High content, low phenol ammonia ratio, good tenderness.

Description

technical field [0001] The invention belongs to the field of plant nutrition and fertilizers, and in particular relates to a method for producing bio-organic fertilizers by using earthworms to process livestock and poultry manure waste. Background technique [0002] With the rapid development of intensification, scale, and factoryization of the livestock and poultry breeding industry, the production of manure from the livestock and poultry breeding industry has also increased sharply, with an annual increase rate of more than 10%. In 2016, my country produced 3.8 billion tons of livestock and poultry manure. At present, it has become the main source of agricultural organic solid waste in my country. Because large-scale livestock and poultry manure is too concentrated and has a water content greater than 80%, and is affected by transportation, labor costs, and inability to digest on-site, it is piled up or discarded without treatment. The pollutants in these excrements (such ...

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Problems solved by technology

[0004] At present, when worm composting is used to treat livestock and poultry manure waste, they are either fully exposed to the air for a period of time to volatilize harmful gases such as hydrogen sulfide and ammonia, or pre-composted for several weeks to reduce the content of toxic and harmful substances. Live-dried livestock and poultry manure is air-dried, fermented and decomposed alone or mixed with other raw materials, and then composted for earthworm breeding. The pre-treatment of air-dried livestock and poultry manure occupies a large amount of land area, which is greatly affected by climate conditions and takes time and labor. Pre-decomposition treatment requires the introduction of other raw materials, which increases transportation costs, and composting fermentation requires raw material ratios, process management, and composting, which requires a certain amount of equipment and labor, which increases the tediousness and input costs of vermiculture. At the same time, the vermicompost produced, The nutrient content of vermicompost is low due to the absorption of nutrients by the feeding feces of earthworms. Most of the vermicompost cannot meet the nutrient requirements of the national standard organic fertilizer. , at about 50%, it needs to be air-dried to meet the water content standard of organic fertilizer, and a large number of beneficial microorganisms contained in it will die and cannot meet the standard of bio-organic fertilizer

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