First, the rice field raises fresh water é²³
Freshwater oysters are colorful, highly ornamental, and delicious in meat. It likes to warm, the optimum temperature 28 ~ 30 °C, is an excellent variety of rice farming.
Freshwater foraging is very wide, like Chinese oysters and clams, and it mainly eats plankton at the larval stage. The juvenile stage has a wide range of foods, such as various organic detritus in the paddy field, artificial powdered bait, and large zooplankton in the field such as protozoa, cladocera, copepods, and rotifers. Bigger, I also like to eat crop seeds and leaves, water leeches, small fish, and shrimp. Therefore, freshwater turtles have a wide source of feed and are well stocked.
In order to save the bait and facilitate checking whether the feeding amount is appropriate, a bait station should be set up in the fish pit, and a bait station can be built in the big fish ditch which is far from the fish pit. The bait station is set in the middle part of the water body, supported by a bamboo frame, and made of a snake skin cloth or a plastic bag. When feeding, the food is fed on the table. Feed twice a day, the first time from 9 to 10 in the morning, and the second time from 3 to 4 in the afternoon. The fed amount accounts for 10% to 15% of the total weight of the fish (depending on the situation of eating and drinking, increase or decrease as appropriate). When the weather is hot and thunderstorms, reduce or not feed. Rice fields fed with freshwater prawn should be eaten with a small amount of grass carp.
Although freshwater turtles are subtropical fish, the water temperature in rice fields should not be too high and cannot exceed 32°C. Attention should be paid to cooling at high temperatures.
Second, the rice field to maintain a spotted tail?
The channeled fork tail introduced from the United States is one of the fine varieties of freshwater culture. Its delicious meat is very popular with the market.
The water temperature of the catfish is approximately the same as that of China's four major fishes. 20 to 30°C is the optimum temperature for the spotted tail. Due to its wide range of food habits, the fish fry stage eats plankton, and gradually grows up to eat the chironomid larvae, mollusks, and large aquatic plants in the water body. After that, it gradually eats small trash fish and artificial diets. Therefore, this species is very suitable for rice farming. It must be noted that when it is artificially fed for the first time, it should be fed inductively. That is, when feeding wild fish for the first time, it is necessary to mix the artificial bait with the bait in the wild bait. The whole bait should be fed less, let it form the momentum of catching food, and it gradually becomes less miscellaneous fish, more artificial bait, still keeping grabbing. The momentum of food, when the attack weakened, stopped feeding. This feeding, repeated several times, so that it is addicted to artificial feed, before they can be fed into artificial feeding. When feeding artificially-combined bait completely, it is also necessary to mix a small amount of wild fish and animal internal organs from time to time.
In addition to induction, feeding technology should also pay attention to speed. That is, the beginning of slow feeding, less vote, so that some fish can not eat because of eating and grab the situation. When the fish are swarming and feeding, feed more, feed faster; when the fish is full, feed less, feed slowly, and don't feed too much, leaving room for good digestion. Tanaka used to feed some of the eel, eel, and grass carp seedlings.
When fed, feed 2 times a day. When the water temperature is near 30°C, feed 3 times during the peak feeding period, you can also use light to attract fish.
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