Basic condition of fishery culture: careful rain prevention of farmed fish fish, good water quality management and normal operation of drainage equipment.

According to the weather forecast of the Central Meteorological Bureau on the 10th, the weather this week was affected by stagnant fronts and stronger southwest winds, with showers or thunderstorms all over Taiwan, especially in the western half of the country. Recently, with the harvest of fish such as milkfish, white shrimp and clams, Ye Xinli, director of the Marine Propagation and Culture Research Center of the Fisheries Research Institute, suggested that farmers should first store sea water in the pond, adjust water quality and enhance the adaptability of aquatic animals to the environment, and raising the poolside connecting pipe is conducive to the exclusion of surface Rain Water, so as to avoid excessive changes in salinity and affect the culture environment.

The first priority of aquaculture water quality management, according to the needs of different species will be divided into light, mariculture environment, the depth of aquaculture ponds are also different, the impact of instantaneous heavy rainfall may be caused by instantaneous heavy rainfall, including the rapid change of salinity of water body causes poor reaction of aquaculture, pathogens in the pond make aquaculture sick due to changes in water quality and air temperature, while in culture ponds with shallow water bodies such as clam, heavy rainfall or excessive drainage will make the sediment turn up. Toxic ammonia nitrogen and hydrogen sulfide products affect the water quality, resulting in the death of clams.

Ye Xinli suggested that farmers should prepare measures to deal with Meiyu's visit as soon as possible. no matter whether they are fish, shrimp, or shellfish, farmers can first improve water quality and enhance the resistance of animals, such as photosynthetic bacteria and probiotics, so that farmers can respond to changes in the environment healthily. When a large number of Rain Water enters the aquaculture pond, he will worry about whether the salinity will change too much, so he can first store some sea water in the pond, and when Rain Water enters the pond, he is not afraid of the salinity falling too fast; in addition, it is also necessary to strengthen drainage facilities, some of which use connected pipe drainage equipment, so as to raise the position of the connected pipe first, but first remove excessive fresh water and avoid affecting the bottom water quality. Finally, when the rain falls to a certain stage, we should pay attention to the change of salinity in the pond, and start the water wheel at the right time, so that the salinity in the water can be evenly distributed. If it has previously enhanced the resistance of aquatic animals to the environment, the farmers will not lose too much.

In addition to the water quality management in the pond, attention should also be paid to the height of the embankment outside the pond. If necessary, protective nets can be installed to reduce the chance of the fish breaching or overflowing the dike. The operation of equipment such as generators and water tankers should also be checked before heavy rain. After heavy rain, fish ponds can be sprinkled with appropriate amount of zeolite powder, lime or calcium carbonate to stabilize water quality. Ye Xinli added that due to recent changes in temperature, fish schools are vulnerable to environmental changes and should be paid special attention to.