As we all know, "a pool of fish is afraid of a black wolfberry sperm." The fishermen in South Hubei said that the carp is black peony, “black wolfberry essenceâ€, mandarin fish or fish. It has a large scale, and it feeds on fish and shrimp. It is a valuable freshwater fish in China. Traditional aquaculture strictly prohibits the polyculture of eels, grasses, oysters, and oysters, etc. If there is a bigger carp in the pond, other fish will be eaten.
In the survey of rural breeding science and technology households by the Political Consultative Committee of the Political Consultative Conference of Xianning District of Xianning City, Hubei Province, it was discovered that Zhang Songbai, a major aquaculture producer in the 8th group of the CPPCC and Yutan Village, Guanyiqiao town, could not fish with 4 people. The carp polyculture has different insights. Zhang Songbai and others jointly contracted two 4,000-mu waters to house captive fish, and also intensively raised fish on 30 mu of water. He learned from the practice of fish farming in the past 15 years that in the fish ponds of 4 large-scale fishes, the stocking of small amounts of squid and sassafras could increase the income of about 300 yuan per mu. Huang Xi also known as the yellow horn. Its head is large and small, with smooth appearance and fast swimming speed. It feeds on shrimps and snails.
Zhang Songbai carefully observed that the largest local eel is about 4 pounds heavier, and only eats small fish less than 2 inches in length; 1.5 pounds or so of carp into adult fish, and only eats one-inch long fry. He then stocked five one-inch long carp fry in an adult fish pond per acre of 4 fish, and stocked 50 half-inch long yellow lotus seedlings. The per mu perch is 15 pounds, 11 yuan per kilogram, and the income is 165 yuan; the yield per mu is 15 pounds, 9 yuan per catty, and the income is 145 yuan. Subtotal 309 yuan. In addition, there are four reasons such as the abundant supply of food resources for local fish, etc., and the output increases by 1% to 2%.
After consulting with 9 fish farmers and 3 fishery experts, the author believes that a small amount of squid and astragalus in the adult fish pond can eliminate other wild fish and other animals in the same pool, reducing the fish food resources in the water. The waste. 4 Everyone's fish, etc., are not the same as the living space of squid and astragalus, making full use of water resources. 4 The fishes and other adult fishes participate in the competition for survival with their heads. The eel and the eel are involved in the survival competition with ferocity and form an ecological balance. In the survival competition, their activities increase, so that the food intake increases, the growth rate increases, and complement each other. At the same time, the water body is further activated, which increases the oxygen capacity and creates a symbiotic and prosperous living environment. The squid and astragalus have a high food chain level and are of delicious meat. The price is generally 2.5 times the average price of 4 people. Proper polyculture can increase economic efficiency. However, squid and scallops should not be excessive; otherwise, the water and the food resources in it will be "overloaded." Put 5 to 6 squid and 50 to 60 yam seedlings per acre into the fish surface.
A zoo in the United States originally put tigers and deer together in a large yard. Since tigers eat deers, they feed them separately. As a result, the deer's activity was small and the growth rate was slow. According to the biological characteristics of fish and the fishermen's practice, according to the biological theory of "using waste and retreating" and the philosophy of "competitiveness can promote development", it is recommended that fish farmers put appropriate amounts of carp and yellow peony in adult fish ponds. .
Enhanced Starch Noodle Machine
Enhanced Starch Noodle Machine,Noodle Maker ,Automatic Noodle Making Machine ,Cereal Noodle Making Machine
Shuangfeng County Dingyuan Machinery Manufacturing Co. Ltd.. , https://www.separators.pl