Water quality adjustment During the high temperature season, the water temperature is high and the water quality changes quickly. Observe it regularly and adjust it in time. The specific methods are: (1) Change the water once every 3 to 5 days, add new water, change the water every time 15 to 20 centimeters; (2) The aquatic plants are easy to die in the high temperature season, remove the dead plants in time, and maintain the breeding environment. Clean; (3) Regular sprinkling of microbial preparations, splashing once every 10 to 15 days in Quanchipia, can effectively improve water quality; (4) The transparency of the pool water is controlled at 40 cm or more.
Feeding in the high temperature season, freshwater crayfish have the habit of burrowing and escaping summer, and the amount of activity during the day is relatively reduced. It is necessary to control the amount of daily feeding, and it is advisable to feed the feed with a slight amount of feed residue after feeding for 2 hours. Feeding time is mainly in the evening, but you can not feed it in the morning.
Aquatic water conservation in high temperature season is high, freshwater crayfish eat less, and enter the cave summer, affecting the growth and fishing of freshwater crayfish. Therefore, it is necessary to conserve the aquatic plants in the culture tanks to reduce the water temperature. The area of ​​aquatic plants in the pool should account for 1/2 to 2/3 of the total water surface. If there are few plants in the pool, large amounts of water peanuts can be transplanted around the pond. Peanuts should be thoroughly cleaned and disinfected with 20 mg/l potassium manganate solution to remove fish eggs and germs.
Timely harvesting of freshwater crayfish is generally carried out in cages. After the cages are well-grounded, the freshwater crayfish are used to crawl against the water, and appropriate microfluidic stimulation is performed to increase the activity of freshwater crayfish and to increase its range of activities to increase fishing. The amount of effect. Using the habit of freshwater crayfish gluttony, it is necessary to stop for 1 to 2 days before catching. During the fishing, high-quality baits with fishy smell or heavy fragrance are added to the cage to attract freshwater crayfish into the ground cage, which can improve the fishing effect. For ponds where fishing is not very obvious, first check the amount of shrimp in the pond. If there is a large amount of shrimp, you can use the method of raising and lowering the water level. The method is: first reduce the depth of pool water by 1/2, lay a cage properly, increase the number of cages appropriately, and then slowly add water to the pool. The freshwater crayfish are stimulated by the lowered water level. Once fresh water is added, the amount of activity is increased. It will increase, the desire to escape will increase, the scope of activities will increase, the chance of entering the cage will increase greatly, and fishing efficiency will increase significantly.