Technical measures for Tilapia Culture to deal with Ice and Snow disaster

Considering the cost control and maneuverability, different links of the industry should be treated differently and corresponding measures should be taken. First, seed conservation and seedling breeding units: build a wind shield on the north side of the pond to prevent the north wind from blowing directly to the surface of the pond, slow down the alternating effect of water, and thus slow down the cooling of the pond water. The pond which has built the overwintering greenhouse can burn carbon and firewood to increase the temperature when the temperature in the greenhouse is too low. When there are conditions, hot water pipes can be used to inject hot water or hot spring water at the bottom of the pond to form a heat island at the bottom of the pond, which is conducive to fish gathering and overwintering. During the cold spell, water should not be added because the water level in the pond is too low, so as to avoid fish stress and easy to freeze to death. Open-air ponds can not be heated by sunlamps at night, because the light lures fish to the low temperature area of the pond surface and frostbite, which is easy to cause water mildew and die. Try not to start the aerator to reduce the convection of pond water, so as to slow down the decline rate of water temperature at the bottom of the pond and achieve the purpose of cold prevention. At the same time, pay attention to the change of water quality, keep the water quality fresh, and adjust the sour groundwater with appropriate amount of quicklime. Second, contact the tilapia processing plant for processing as soon as possible to meet the commercial fish specifications; for commercial fish with smaller specifications that cannot be used for processing, food enterprises should be organized to purchase as much as possible, used in the production of canned food, surimi, wax products, snacks, seasonings, etc., in order to minimize the loss of farmers. The raw materials that are too late for processing will be frozen after acquisition. Products that can not be used for processing can be used as raw materials for fishmeal processing. This cold wave also exposed the weakness of the current tilapia industry, that is, the current tilapia processing products are single, the ability to resist risks is very poor. Third, it is suggested that the tilapia seedling breeding farm should do a good job of strengthening the cultivation of parents during the overwintering period, and carry out parent group breeding ahead of time, so as to cope with the expansion of the demand for post-disaster seedlings in the breeding industry this year. And contact and negotiate with the seedling production fields that are not affected by the cold wave in advance to prepare for the transfer of seedlings.