Tilapia is not tolerant to low temperatures, and it is necessary to start catching and marketing the fish when the water temperature drops to 15°C. Utilizing tilapia culture ponds to raise squid during winter and winter, squid larvae are cheap, feed fish are abundant, and raised to market in May of the following year, squid prices are relatively high. After the stocking of tilapia was released, the ponds were used until late October to clear the pond with quick lime. After 10 days, carp species with a tail weight of 150-200 g were stocked, and 300 fish were reared on the water surface per acre. Fish seedlings were disinfected with malachite green and salt mixture. Feed the feed at the same time as the squid seed pond and feed fish. Each mus of water will be stocked with 150-kilograms of squid weighing 25-50 grams. After that, feed fish will be regularly replenished. Before the end of February of the following year, feed fish will be fed once a week, and two feeds will be given every week in March, each time 15 to 20 kg will be fed per acre. In April, the amount of feed will be increased according to the weather. Ensure that the ratio of carp and feed fish tails is 1:5-10. The density of feedstuff fish is too low. On one hand, squid will not eat enough, on the other hand, it will consume too much physical strength due to predatory feed fish, which will affect the growth. If the density of feedstuff fish is too high, it may easily cause anoxic floating head. Fertilizing the water to farm squid requires that the water body is rich in dissolved oxygen and the water quality is fresh. Add new water 1 to 15-20 days in winter, and fill 10-15 cm deep water each time. Fill new water once every 7-10 days in spring. Add 20-30 cm deep water each time to ensure that the dissolved oxygen in water is kept at 4 mg. Above 1 liter, the transparency is kept above 40 cm.
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