Soilless cultivation method based on combination of livestock manure and biogas slurry, and irrigation system

Abstract

The invention discloses a soilless cultivation method based on combination of livestock manure and biogas slurry, and an irrigation system. According to the method, products, obtained by mixing and composting the livestock manure and substances with high carbon and nitrogen content, are used as organic cultivation media, the organic cultivation media are mixed with inorganic cultivation media to form solid cultivation media, the biogas slurry is used as nutrition liquid, and rotation irrigation of the biogas slurry and water is carried out to achieve soilless cultivation. The soilless cultivation method has the advantages that the organic cultivation media are obtained through aerobic composting of the livestock manure and the substances with the high carbon and nitrogen content, and accordingly, the problem of difficulty in returning the livestock manure to the field is solved; through rotation irrigation of the biogas slurry, serving as the nutrition liquid, and the water, nutrientsrequired for growth of crops are supplemented, the biogas slurry is consumed, and environmental protection costs of companies are reduced; the risk of enrichment of heavy metals and antibiotics in environmental soil due to returning organic fertilizer to the field is reduced; the cheap cultivation media are provided for current soilless cultivation, and the problem that current seedling raising media including coco coir and peat are expensive is solved.

Description

technical field [0001] The invention relates to the technical field of livestock and poultry manure treatment and agricultural cultivation, in particular to a soilless cultivation method and irrigation system utilizing livestock and poultry manure and biogas slurry. Background technique [0002] Among the many comprehensive utilization methods of livestock and poultry manure, the "solid-liquid separation-liquid anaerobic fermentation" mode is one of the main modes in my country at present, that is, the pig farm adopts the dry manure process to collect the manure and then treat the manure with solid-liquid Separation, the solid part undergoes aerobic fermentation to produce organic fertilizer, and the liquid part undergoes anaerobic fermentation to produce biogas, biogas slurry and biogas residue, among which organic fertilizer and biogas slurry are rich in nutrients such as nitrogen, phosphorus, potassium, etc., which are better farmland fertilizers . [0003] However, it is ...

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Problems solved by technology

[0003] However, it is difficult to return livestock and poultry manure to fields in my country at present.

One is that the inspection standards and production technical specifications of manure and biogas manure are not perfect, and they will not be "returned"; the other is that the combination of planting and breeding is not tight enough to isolate the passage of manure and biogas manure to the field; the third is that organic fertilizers are lower in nutrients than chemical fertilizers. , the problem of heavy chemical fertilizers and light organic fertilizers in agricultural production is prominent; Fourth, organic fertilizers are large in size and high in transportation costs, making it difficult to transfer manure or biogas manure to distant areas for consumption

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