Jiang Huangqi, squid, and shrimp mixed culture technology

Pseudobgrus vachelli (Richardson), also known as Vallisnichthys nobilis, is a genus of the genus Acridus, Polygonidae, and Scutellaria. It is the largest species in the genus and currently has a maximum body weight of 1750 g. With the Yangtze River, the Huaihe River, the Pearl River and its mainstream, benthic economic fish is one of the traditional fisheries in China. Jiang Huanghuai is a partial animal omnivorous species. The carp is fierce and carnivorous. He likes to eat live fish, live shrimp, and green prawn are omnivorous. In the three, Jianghuang and squid both prefer fish and shrimp. The squid only eats live fish and live shrimp. Jianghuang wolfberry eats more dead fish and dead shrimp. There is no food conflict between the squid and the squid. Feed the bait and fish and shrimp. Both Jianghuangjing and Qingjue feed on compound feed, but Jianghuangjing mainly feed on pellet feed. Greenpeckers mainly feed on organic decay. Therefore, Jianghuangjing and Qingyang shrimp are complementary to each other in terms of food habit. Between the three, Jiang Huang's dorsal fins and pectoral fins each had a hard thorn, and the eel was very difficult to swallow, and Jiang Huangxi liked to cluster, which also prevented the eel from attacking. Prawns are stocked with baited shrimps because they prefer to eat green prawns. Green prawns, on the one hand, are preyed by eelgrass and eel, and on the other hand, they can also obtain a portion of the yield. In terms of water quality requirements, Jiang Huangqi, squid, and freshwater shrimp all prefer to inhabit in fresh waters. There is no contradiction in the water quality requirements for polyculture.
First, pond preparation
1. Pond area 0.3ha. -0.5ha. , Water depth 1.5m-2.0m, no leakage, flat bottom, mud no more than l0cm, adequate water, easy injection and drainage.
2. Lime and other drugs thoroughly clear the pond disinfection, lime consumption: dry (reserve pool water 6cm-l0cm) 60kg-75kg per acre, with a water law per acre water depth of 125kg-150kg.
3. Transplanted aquatic plants, water plants selected elodea nutlalii, Vallisneria. The green algae thrive in the lower spring and fall seasons, but grow slowly in the high-temperature summer and even stop growing; the bitter grass grows well in summer. The green algae are planted in late November or mid-February. Vallisneria is sown in mid-March. Water plants should cover 70% of the water surface.
Second, the stocking situation
1. Jiang Huangxi: specifications l0cm - 15cm, put 400 -500 per mu, the launch time is selected in February.
2. Squid: specifications l0cm - 15cm, put 100 to 150 per mu, the launch time is selected in February.
3. Green prawns and snails: In early April, 500 kg of snails were placed per acre. In early May, 3 kg of boiled shrimp were released per mu, or 100,000 prawns were delivered in June.
4. Scorpion and squid summer flowers: In late May, 100,000 locusts and summer flowers (or Wuzai) were released per acre.
Third, feeding and feeding is mainly for feeding Jiang Huangqi and Qinghai shrimps, with 30% to 35% of crude protein for feed, fish meal, bean cake powder, bran powder, vegetable oil phospholipids, multivitamins, inorganic salt mixture, and adhesives. Such as can be made, can also be used to stir the fish cake and soybean meal on the feed table. Construct 2 - 3 feed stations per pond. At the beginning of domestication, the amount of feed should be larger, fed twice a day, and the amount of feed in the evening is greater than during the day. Feeding table with wire folded area. 1m square -2m square square, covered with dense mesh cloth, the four corners with a rope hoisted, the top is a float, when feeding with bamboo poles stir up the feed table, put the feed and then gently Put in water. Such as self-provisioned feed, the raw material can be fully crushed, with adhesive, stirring into a l0cm diameter feed pellets, and then put people feed. The feed amount was within one hour after the feed water was fed.
IV. Water Quality Management In the spring, gradually add new water according to the principle of shallow depth and depth; to midsummer, the water depth should reach 1.5m-2m; in the summer, every 15 days to 20 days, change the water 1/4, and the water body transparency should be kept at 40cm. -50cm.
V. Disease prevention and control At present, the breeding of E. citrinus has been found in small melon worm disease, anchor head lice disease, putrefaction disease, water mold disease, etc. Among them, rot disease has a greater harm. Symptoms of rot are the symmetrical lesions of the diseased fish at the end of the pectoral fin or abdomen, first dorsal fin base, caudal peduncle, etc. The pigment first fades, whitens, and hyperplasia, and then ulcerates until bones and internal organs are exposed and die. The disease should be mainly prevention and prevention and control. One is to prevent fish from being injured. Secondly, because the surface of the eel has no scales, the skin is very vulnerable to injury, especially in the process of fishing, transportation, and reproduction. The second is to create a good pond ecological environment and do a good job in ponds. Dredging, disinfection, planting plants in the pond; the third is to add Vc and VE in the feed in order to increase the body's resistance to disease; Fourth, regular Quanchiposa disinfectant to bromochlorohydantoin better.

Posted on June 15, 2018