I. Judging Fish Famine: (a) Look at the length of time you eat. After eating, it was normal to eat within 3 hours. After 2 hours or so, it indicated that the amount was not enough, and some of the fish were not full. They should be properly increased at the time of the next feeding: if the food was not extended after 4 hours, The fish school has left the food market, indicating that there is enough food, the next feeding can be reduced in moderation. (b) Look at the size of fish growth. In April and May, the food intake of fish increases gradually. In the feeding plan of one week or one sentence, the changes in the beginning of week and weekend or the beginning and end of ten days should be observed. If the number of shots is the same every day, it will be eaten within 2 hours by the end of the weekend or the end of the ten days. This indicates that the fish’s weight has increased, the food intake is large, and there is no enough food. It is necessary to increase the amount of feed until the start of fishing in December. , can use this method to identify the master. (3) Look at the movement of the water. After feeding, if the fish is not sick and frequently moves on the surface of the water, this is a manifestation of hunger. On the contrary, the fish after eating will drill to the bottom of the water. In particular, fry or fingerlings rush wildly on the water. This is a sign of severe hunger. It is commonly known as “race horse disease†and it is necessary to immediately feed and block wild swims, otherwise it will kill in large numbers. As for cockroaches and cockroaches, a type of fat-water fish that mainly eats plankton can be observed to determine whether it meets its growth requirements. When the water quality is thin, use fertilization methods to cultivate plankton. If the water quality is too fat and the signs of deterioration appear, the water should be turned on immediately to increase oxygen. If necessary, the trichlorfon drugs will be used to kill the zooplankton and it will be beneficial to the growth of the fish.
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Second, to prevent the occurrence of hunger and food inequality: There can be no vote for what, how much to vote, and no vote. Fish said: "Stop the day, white long three days." Some farmers tend to only look at the fields when they are busy, regardless of the fish ponds, and some of them are on the way for several days. Some feed concentrates are concentrated on a spot that is not 10 square meters, causing fish to eat unevenly and grow unevenly. We can't reach the planned output, and some do not care for the feed, and feed it directly after mildew, resulting in the onset of fish and heavy losses. Therefore, if we want to learn how to cultivate the science, we must first learn to identify the fish's hunger and satiety, and adhere to the quantitative, qualitative, positioning, timing of the "four definite" feeding method, so as to achieve high yields.