Combined method for breeding weever in runway and intercropping crayfish in paddy field

Abstract

The invention discloses a combined method for breeding weever in a runway and intercropping crayfish in a paddy field. The method of breeding the weever in the runway and a method of breeding the crayfish in the paddy field are combined. After residual feeds and excrement of the weever in the breeding runway are centralizedly absorbed, the residual feeds and excrement are drained into the paddy field for intercropping the crayfish through pipelines, so that the crayfish takes the residual feeds, the paddy field absorbs the excrement, and the water quality is purified. Besides, the water body rich in nutritive matter like nitrogen and phosphorus is drained out of the runway, and is pumped into paddy field ditches and the paddy field through a waterwheel aerator, so that aquatic plants and rice in the paddy field ditches absorb the nutritive matter like nitrogen and phosphorous in the water body and purify the water quality. Through the combination, the water body of the paddy field becomes flowing water, the growth of the crayfish is facilitated, the waste in the breeding runway is turned into things of value, the water body of a purification area outside the runway is also fully utilized, and zero-drainage of breeding wastewater is achieved; meanwhile, land is fully utilized, and the maximal yield is achieved. It can be achieved that the annual yield of 50 mu of land is 473 Kgof rice, 229 Kg of crayfish and 51,838 Kg of the weever, and the average benefit per mu reaches 8,810 RMB.

Description

Technical field: [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for interbreeding crayfish in a track-type high-density culture of perch and paddy fields. technical background: [0002] The track-type fish farming is a kind of high-efficiency breeding mode of circulating water in ponds that has emerged in recent years. The "push water aeration" device is installed in the front to circulate the pond water on both sides for 24 hours, and the sewage suction device is installed in the back to collect fish dung and residual bait at all times. . The farmed fish is confined within the runway, and the flowing water flows through the "runway" uninterruptedly, bringing oxygen and taking away feces and residues. In addition to being collected, feces and residues also flow into the large water body outside the runway and then flow into the runway after being purified by aquatic plants. Although the fish farming density in the ...

AI Technical Summary

Problems solved by technology

There is basically no flow in the water body of paddy field cultivation, which belongs to "a pool of stagnant water", which is not conducive to the growth of crayfish and the uniform distribution of nutrients in the pond

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