Middle and Late Management of Crab in Rice Fields
Octopus Tentacle,Big Octopus,Octopus Leg Heng Li Seafood Co., Ltd. , http://www.zz-food.com
Entering the summer and autumn hot season is a key moment for the growth of rice and crabs. Grasping the management in the middle and later stages will greatly improve the economic benefits of raising crabs in paddy fields. Its management points are as follows: 1. Keep fresh water in fresh rice fields to constantly change water, Remove residual baits and dirt in a timely manner. When changing the water, first drain the pool water by about 1/3, add fresh water, and maintain a certain water level. The water level must not be ups and downs. The water change should be carried out in the afternoon 3-4 pm. The water source must be clean and free from pollution. 2. Rational feeding of bait The mid-term feeding of crabs should be based on plant-based diets, limiting the feeding of animal baits. After September, gradually increase the feeding of animal baits and feed enough aquatic plants, such as peanuts, Water hyacinth and other. 3, anti-escape, anti-adversary damage to rice fields, water, shallow dwarf, crab holes, often causing leakage of water, causing the crabs to escape. Therefore, frequent inspections of dikes, escape prevention facilities, etc., should promptly plug the dike's hole. If there is any damage to the inlet and outlet grille, it must be replaced in time, and strong winds and heavy rains should be avoided. At the same time, it should also prevent enemy animals such as water mice and water snakes from entering the crab pool. 4, note that the prevention of crab disease should often be dissolved with quicklime spilled the whole pool, every 15 to 20 kilograms per 667 square meters, or with 0.5 mg / l malachite green water disinfection. Once the diseased crab is found, the diagnosis and treatment should be isolated immediately. There is no need to limit or limit the use of inorganic fertilizers and pesticides in crab-raising paddy fields, and organic fertilizers are mainly used for fertilization. 5, timely capture crabs in early October began to capture crabs for sale. For crabs or crabs that are not for sale, they should be selected for overwintering or wintering.