Eel and vegetable symbiosis method based on recirculating aquaculture

Abstract

The eel and vegetable symbiosis method comprises the following steps that an eel recirculating aquaculture system is built in a greenhouse, and biological filter cotton is placed in a water inlet pipe of the recirculating aquaculture system; a three-dimensional planting wall is built on the edge of the culture pond, purslane and houttuynia cordata are planted on the upper middle layer of the three-dimensional planting wall, and thyme is planted on the lower layer of the three-dimensional planting wall; after the monopterus albus fries are put into the culture pond, the culture time is 3-5 months, the time for pumping water into the culture pond through the submersible pump by the planting wall every day is 5-8 hours, the biological filter cotton in the water inlet pipe is cleaned once every 20-30 days, and the vegetables are harvested once every 30 days. The eel and vegetable symbiosis method based on circulating water culture has the advantages of being convenient to operate, capable of saving space, high in culture survival rate and the like, not only solves the problem of accumulation of nitrogen and phosphorus nutritive salt in part of circulating water, but also can effectively remove fishy smell of the monopterus albus and improve the resistance of the monopterus albus to plant diseases and insect pests, and therefore culture risks are reduced.

Description

technical field [0001] This patent relates to the technical field of aquaculture, in particular to a symbiosis method for eels and vegetables. Background technique [0002] Rice field eel (Monopterus albus Zuiew) breeding has high economic benefits, a broad market and a good development prospect. The eel symbiotic recirculating aquaculture model is a green farming model, which has the characteristics of water saving, chemical fertilizer and pesticide saving, and high utilization rate of nitrogen source. It can achieve the goals of ensuring the quality and safety of aquatic products and reducing the discharge of breeding waste. The eel recirculating aquaculture model is in line with the future development trend of the aquatic industry. [0003] The fish and vegetable symbiosis model in my country is mainly based on the cultivation of aquatic vegetables on the supporting biological floating bed in ponds (Yuan Quan et al., 2019), supplemented by the industrial circulating wate...

AI Technical Summary

Problems solved by technology

However, in the recirculating aquaculture of rice field eels, if vegetables are directly planted on the surface of the aquaculture water, the fallen vegetable leaves or roots will cause blockage of the filter system, resulting in increased manual cleaning costs. Live in the root system of vegetables, and the vegetables cannot grow well

In addition, under the condition of high-density recirculating aquaculture, ricefield eel pests and diseases, especially enteritis and hemorrhagic diseases, are prone to occur, and it is urgent to screen functional vegetable varieties that are conducive to the prevention and control of ricefield eel pests and diseases