A kind of large-scale ecological cultivation method of loach

Abstract

The invention discloses a large-scale ecological farming method for loach, wherein only water earthworms are used as food in the whole process of loach cultivation, and the cultivation method includes: construction of cultivation ponds: selection of two different scales with sufficient water sources, rich nutrition, drainage and irrigation Convenient wheat fields or rice fields with gentle slopes around them are used as the construction base of the breeding pond; the cultivation of water earthworms; the placement of loach inch seedlings: after the water earthworms in the subsidiary pond are cultivated for 40-45 days, 90-100 tails per square The breeding density of loach puts the loach-inch seedlings into it until the loach inch seedlings grow into adult loaches that meet the salvage requirements, and then fish them out with a mesh sieve. The large-scale ecological breeding method for loach of the present invention uses water earthworms as food in the whole process, which solves the current breeding mode that relies too much on artificial feed in aquaculture, and solves the situation of overall loss in aquaculture caused by water pollution in the breeding process.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a large-scale ecological breeding method for loach. Background technique [0002] my country's aquaculture is dominated by filter-feeding and omnivorous species, followed by filter-feeding species accounting for 50.0%, omnivorous species accounting for 26.0%, herbivorous species accounting for 12.0%, carnivorous species accounting for 7.0%, and aquatic plants accounting for 5.0%. In recent years, with the development of the economy and the improvement of people's living standards, the market for carnivorous species with delicious meat and high economic value is active, and the development prospects are promising. According to statistics, wild fish that are directly used for feeding in aquaculture in my country every year 4-5 million tons, and another 30 million tons are fed as feed materials. From the perspective of the form of feed utilization, my country's aquaculture pro...

AI Technical Summary

Problems solved by technology

In terms of freshwater aquaculture, many fishermen directly use feed raw materials, or cultivate live baits such as rotifers through a large amount of fertilization. This production method breaks the natural ecological food chain and destroys natural resources, especially the "high nutrition" of farmed animals. Meican consumes nearly half of my country's marine fishing output, wasting a large amount of economic juvenile fish and some precious aquatic species, but the aquaculture products did not increase their value, but were plagued by environmental pollution and aquaculture diseases. , quality and other issues are coldly received by domestic and foreign aquatic product processing and consumer markets

Tests have shown that nitrogen and phosphorus discharges are 4-5 times higher in the breeding methods using small miscellaneous fish as feed and in the feeding method using compound feed, and a large amount of organic matter that has not been absorbed and digested enters the water area, causing the deterioration of the local environment. Induced diseases, threatening the food safety of aquaculture products and the trade of aquatic products in our country