Combined type ecological cycle planting and breeding system

Abstract

The invention discloses a combined type ecological cycle planting and breeding system. According to the invention, the tail water discharged from the glass tank fish tank culture area is subjected to microbiological treatment, then enters the vegetable cultivation system and is biologically absorbed and filtered by vegetable root systems, the treated wastewater is returned to the culture pond, and no wastewater is discharged, so that the production requirements of high-quality fresh fishes and vegetables are met, and nutrient loss which pollutes the environment is avoided; beneficial bacteria are utilized in the breeding tail water system to adjust balance of bacterial phases and algae phases in water and prevent deterioration of the water environment caused by accumulation of residual feed and metabolites, and bacillus has the effects of preventing excessive accumulation of excrement, dead algae and residual feed, promoting updating of the algae phases, decomposing organic matters in water in time and improving water quality. The compound system of the closed loop process has very obvious improvement and restoration effects on water quality and substrate of the pond, can be used for large-scale production, is high in efficiency, and reduces the use of water resources to a great extent.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, in particular to a compound ecological circulation breeding system. Background technique [0002] With the improvement of people's living standards, agricultural production has also entered the field of industrialization. While the industrialization of agricultural production has brought large-scale integrated production to people, it has also had a huge impact on people's lives. my country is a big aquaculture country in the world, with aquaculture output and area ranking first in the world; the current international aquaculture system originated from the primary aquaculture system in the 1990s, which simply combined fish farming with hydroponics technology, and cultivated areas Most of them are based on planar layout utilization, such as the combination of floating hydroponics and fish farming, and the combination of NFT pipe culture and fish farming. With the introduction of the current g...

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Problems solved by technology

[0003] However, the traditional breeding method is at the cost of sacrificing the environment. During the breeding process, every kilogram of fish can discharge 1-2g of ammonia nitrogen to the water body every day, consume 5-6g of dissolved oxygen in water (equivalent to the natural reoxygenation of 1㎡ of water surface for 2 days), pollution The water body is 1.5m3; a large amount of pollutants will also be produced in the process of industrialized aquaculture, including uneaten substances and fish excrement, about 36% of the feed will be converted into organic waste and excreted, and 75% of the nitrogen and phosphorus feed will be left over Become pollutants in water, when the concentration of these substances reaches a certain level, the ecological environment will be destroyed

At the same time, traditional planting, especially vegetable planting, requires a large amount of land. Due to the abuse of pesticides and chemical fertilizers, the land is hardened and the environment is polluted.

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