High temperature will continue, and fishery production will be strengthened

High temperature will continue, and fishery production will be strengthened

Since August 1, the provinces of the Yangtze River Basin have lasted above 35 ° C and high temperatures above 35 ° C. Northwest of Hubei, east to central Anhui, southeast Anhui to southern Jiangsu, northeast Jiangxi, central Hunan and other places have reached 7-9 days. Extreme high temperature weather has adversely affecting aquaculture, especially before noon to sunset, the surface water temperature is too high, or even more than 40 ° C. It is an extremely high temperature that warm water -based fish. Phenomenon occurs. According to the later weather trends, Jianghan, Jianghuai and other places in the next ten days (August 11 ~ 20) will continue to high temperature weather. The maximum temperature is 37 ~ 39 ° C, and the local may reach 40 ° C or more. Under extremely high temperature weather, the water temperature is extremely high. On the one hand, the dissolved oxygen decreases, and the hypoxic pan -ponds are prone to occur. On the other hand, high temperature affects fish and shrimp feeding, and the crayfish appears into the cave. The water plants on the upper layer of the mouth of the crab pond are prone to rot and affect the water quality. In addition, high temperatures can easily cause a large number of pathogenic bacteria to reproduce, increasing the risk of the body's disease. To this end, under extreme high temperature weather, be sure to do a good job of feeding management and strengthen water quality management. Suggestions:

1. Properly reduce the amount of feeding, reduce the bait rate, and change the puffed feed to a sinking particle feed, and the bait should avoid the highest time of the water temperature. Water, reduce the water temperature of the bait area, increase the appetite of fish, and prevent the bait in the evening.

2. Diligence, keep the pond deep water level, and ensure that the water temperature of the bottom layer is stable. The water replenishment time is best to be carried out at night, reducing the adverse effects of temperature changes on algae and fish body.

3. Extremely high -temperature weather is severe water. If possible, at least one oxygen -enabled machine should be maintained to promote the long period of water convection in the upper and lower layers, reduce the surface water temperature, increase the oxygen dissolution rate, and bring the surface layer high -soluble oxygen to The bottom of the pond. During the daytime high temperature period, the oxygen increase is not allowed, so as to avoid rising water temperature in the middle and lower layers and the fish cannot tolerate the fish.

4. High water temperature, the growth and reproduction of bacteria at the bottom of the pool, the organic matter decomposition of the bottom of the pool, the increased oxygen consumption, the bottom frequency should be increased, and the biochemical and chemical modified products should be applied to optimize the bottom environment of the pool to avoid worsening at the bottom of the pool.

5. The high temperature period is also a period of high incidence of aquaculture, especially bacterial diseases. Focusing on parasites such as Beetle, such as anchor flea, and gastrointestinal ulcer diseases. On the other hand Phenomenon such as excitement, poisoning.

- END -