Putian cultivation of shrimp technology
Local practices have shown that the use of shallow water for the cultivation of clams and the cultivation of green prawns results in both good harvests of clams and shrimps and good economic and ecological benefits. ?
First, farmland infrastructure construction?
Should choose irrigation and irrigation convenient, fertile soil, light conditions, good cultivation of paddy fields, with an area of ​​3 to 5 acres is appropriate. The outer ring ditch 0.5 m wide and 0.8 m deep is excavated around Putian, and a 0.5 m wide and 0.6 m deep ditch is to be excavated every 2.5 m on the surface of the plutonium. "Field" shape, so that the ditch and groove connected. There are injection and drainage systems on both sides of Putian, and anti-escape facilities such as dense fences and dense iron windows are installed at the injection and drainage outlets. Before flooding in Putian, 30-35 kg of lime per acre was used to sputter the entire pond. ?
Second, transplanting seedlings and management?
1. Seedling Transplanting pods were sowed in April to May for germination, seedlings were transplanted for 45 days, and the distance between transplanted holes was 50 to 60 cm. 1 pod planted per hole or ramets with 3 to 5 phylloidal stalks 1 Clusters are planted with 1 500-2 000 plants per acre. ?
2.? Putian management Putian management measures are: (1) fertilization. Before the transplanting, deep application of human manure, green manure and other organic fertilizers, organic fertilizer should account for 70% of the total amount of fertilizer; In addition, the application of 2-3 kg of urea per acre. During the growth period, compound fertilizers containing nitrogen, phosphorus, and potassium and soil miscellaneous fertilizers must also be applied. (2) Water management. After transplanting, the water level in the field is 8 to 10 cm deep. (3) Prevention and treatment of diseases. The main prevention and control of blight, rickets, etc., prevention and treatment should try to choose some efficient and low toxicity pesticides. ?
Third, put fresh shrimp and management?
1. Transplanting aquatic plants and aquatic plants can not only provide plant food for green shrimp, but also provide shelter and habitat for the green shrimp, and it can also become attached to the shell of the green shrimp. Therefore, the cultivated shrimp should be transplanted into the water. . ?
2. The stocking shrimps will be transplanted for 7 to 8 days after the green crops have been released. In the morning, 0.2 to 0.5 kg of egg-bearing shrimp will be stocked at multiple points per mu. ?
3.? Rational feeding of fresh shrimp like eating peanut cakes, bean cakes, rice bran, distiller's grains and other plant foods, but also like to eat snails, cockroaches, cocoon and other animal food. Green shrimps are mainly fed with powdered material during the seedling stage and pelleted foods are fed later. Generally, it is advisable to feed along the ditch side once a day, and the amount of feeding is 5% to 10% of the body weight of the shrimp, and it is advisable to eat basically or slightly remaining on the morning of the second day. ?
4.?Quality Management Water quality of shrimp is high. In the hot season, change the water every 5 to 7 days. Change the water by 1/3 each time. When changing the water, keep the water depth 0.5 meters or so. Normally, Putian should maintain a high water level. ?
Fourth, the harvest? In order to facilitate the high yield of pupae and shrimp, it is best to capture shrimp and harvest pupae in November.
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Other Chemicals,Epichlorohydrin (Ech),Lactic Acid 80%
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