In October, it is an important season for fattening and harvesting of aquatic products. Strengthening feeding and management during this period has a close relationship with the final aquaculture production and benefits. Mainly should do the following aspects: First, the amount of feeding. Although the temperature in autumn is gradually turning cooler, and the growth of fish is still relatively fast, especially the weight gain of fish is more obvious. Therefore, it is important to ensure that the feeding and feeding will ensure the yield and benefit of the pond culture. From late September to late October, the high season of fish disease has passed, the weather is normal, the risk of floating heads of farmed fish is also reduced, and the amount of feeding can be appropriately increased to allow the fish to eat day and night. For those that rely mainly on green feed, the proportion of feedstuffs must be increased. However, it is also necessary to prevent the supply of too much or deteriorated feed from harming fish and worsening water quality. In this period, the amount of feed generally accounts for about 40% of the total feeding amount for the whole year. After late October, when the water temperature decreases, the fish’s food intake will decrease, and the amount of feed will be reduced. It is only required that the fish be preserved and that it is harvested until harvested. The general feeding amount only accounts for 10% to 15% of the total amount of the whole year. Second, rational fertilization. In early and mid-autumn months, the water temperature is still high, coupled with the ever-changing climate, the water quality is easy to change, and fish eat well and consumes large amounts of oxygen. Therefore, the amount of fertilization is less. In late autumn, the water temperature is gradually lower, organic matter is decomposed slowly, and fertility lasts for a long time. The main reservoir of filter-feeding fish ponds from September to October in the implementation of inorganic fertilizer, and in October after the application of organic fertilizer should be the main, once every 10 to 20 days, to maintain water transparency of about 30 cm. Third, regulate water quality. There is a pool of water sources, as much as possible to fill new water every 10 to 15 days, each time adding new water 20 to 30 cm, and appropriate discharge of old water. In the case of ponds with water-free sources, the water in the ponds can be used to pump, spray, shoot, etc. to increase the convection and movement of the water. The ponds equipped with aerators will be turned on from 12 noon to 2 pm on sunny days to promote the circulation of surface water and bottom water, so that the dissolved oxygen will be even and reasonable, and increase fish appetite and disease resistance. Every half a month, 20 kg of calcined water per acre is poured to improve water quality, neutralize acidity, and release nutrients. Fourth, prevention and treatment of fish diseases. Adhere to the prevention of prevention, prevention and control, and treat both the symptoms and the symptoms. Apply quicklime or bleach regularly every half month to 1 month. After catching large nets or screening density for each time, the water body is disinfected once to prevent bacteria and parasites from invading the damaged fish body. Pay attention to the quality of the feed, do not spoil the spoilage of the feed. The fed green feed must first be washed and sterilized with 20 g/m3 bleach. When cloudy, windy, heavy rain, low air pressure, floating head or other abnormalities, do not cast baits, do not spill potions, so as to avoid waste and cause adverse reactions. Fifth, pay attention to escape, anti-theft. In October, crabs and soft-shelled turtles have basically grown into commercial specifications, and they have gone ashore to eat or flee. At this time, it is necessary to step up the patrol pond to prevent escape and man-made theft and avoid loss of interest. Conditional pools can be set up for temporary holding, temporary catching and catching up, and centralized sale at the time of listing, and it is also easy to manage. However, disease control under high density should be done to prevent the occurrence of diseases due to mechanical damage caused by improper operation.
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