Organic matrix fish and vegetable disjunctive symbiosis mixed planting and breeding system

Abstract

The invention relates to an organic matrix fish and vegetable disjunctive symbiosis mixed planting and breeding system. The system comprises an aquatic breeding area, a matrix processing area and a planting area, wherein the aquatic breeding area comprises a fish pond, a multistage precipitation separation device and a nitration bed; breeding waste water in the fish pond enters the multistage precipitation separation device and is filtered; precipitated and separated solid organic matter enters the matrix processing area and is processed; filtered clear water enters the nitration bed for nitrating treatment; the clear water subjected to nitrating treatment of the nitration bed flows into the fish pond and the planting area; planting matrix produced in the matrix processing area enters the planting area; after the planting period is ended, waste planting matrix produced in the planting area is discharged into the matrix processing area again for treatment. By adopting the system, the yield and quality of plant cultivation are improved, the problems of too high nutrition concentration and salt enrichment of water in the aquatic breeding system are solved, the investment cost of nitration matrix is lowered, the construction cost of the fish and vegetable symbiosis system is lowered, and the sustainable developing aquatic breeding and planting production mode is realized.

Description

technical field [0001] The invention belongs to the technical field of aquaculture and agricultural planting, and in particular relates to a mixed planting and breeding system in which fish and vegetables are separated and symbiotic with organic substrates. Background technique [0002] Traditional single aquaculture (such as freshwater fish, shrimp, and crab farming) generally uses replacement methods to treat aquaculture wastewater, and directly discharges wastewater to cause environmental pollution, which does not meet the environmental protection requirements of sustainable development. If the aquaculture wastewater is treated and discharged or recycled, the cost of the corresponding environmental protection equipment and facilities will be high, which does not meet the needs of low-cost production. Traditional soilless cultivation (such as vegetable, melon and fruit, flower cultivation) such as organic ecological soilless cultivation is mostly based on one-time simple i...

AI Technical Summary

Problems solved by technology

[0005] 1) In the closed-circuit water system, fish and vegetables have different demands on the degree of nutrient enrichment formed in the water system, resulting in irreconcilable ecological contradictions between fish and vegetables, that is, if the water body conductivity value in the system is used as the nutrient level of the water body Reference value, for vegetables, the nutrients in the water need to reach a higher conductivity value to meet the growth needs; for fish, if the conductivity value of the water in the system is too high, it will lead to fish disease or death; In actual production practice, if the nutrient level of the water body is increased to meet the growth of vegetables, it will cause fish diseases and death; if the nutrient level of the water body is reduced to meet the survival needs of fish, the growth of vegetables will be seriously affected, and through artificial The adjustment operation is too difficult, the cost is high, and the system security is not high, thus forming an irreconcilable ecological contradiction between fish and vegetables;

[0006] 2) Vegetables (plants) have the function of water transpiration during the growth process. In conventional planting, the water supply management requirements of vegetables are strict, and artificial quantitative supply will be carried out according to different periods and different needs, so as to achieve the purpose of water saving; and When the vegetables and fish are in the same closed-circuit circulating water system, the vegetables will endlessly transpirate the water in the system, resulting in unnecessary water loss, which can not achieve the expected water saving goal of the traditional fish and vegetable symbiosis scheme;

[0007] 3) In the traditional aquaponics system, organic matter is decomposed to produce a variety of compound salts, and the salts that can be absorbed by vegetables (plants) as nutrients only account for a part of them, which causes some types of compound salts to remain It will stay in the system and continue to enrich, eventually forming an excessively high eutrophication in the water body, which will damage both fish and vegetables

[0008] In addition to the above three main defects, traditional fish and vegetable symbiosis also has problems such as differences in requirements for external environmental conditions between fish and vegetables (such as ambient light, ambient temperature, etc.), large amount of nitrifying substrates, and high construction costs of aquaponics systems, which lead to traditional aquaponics. The fish and vegetable symbiosis method cannot truly realize its theoretical expectations in actual production, cannot form effective product output and quality, and cannot carry out real production practice and promotion

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