The area of ​​built earthen ponds ranges from 3 mu to 5 mu and can maintain a water level of 1.3 meters or more. The depth of silt does not exceed 12 cm. Ten days before the crabs enter the pool, clear the pond with quick lime and fill it with water one week later.
Cement pool: an area of ​​75 square meters to 150 square meters, can store more than 1.2 meters. The bottom of the pool is covered with 8 cm to 12 cm of fine sand, which can be used after being sterilized and soaked in water for 10 days.
Indoor no need to build a plastic greenhouse insulation facilities, directly use the idle houses to build a smooth concrete floor, the ground does not leak cement pool for short-term maintenance, the general area of ​​10 square meters to 30 square meters.
The cement pool should be stocked at 1.5 kg-2 kg per square meter. Before the crabs enter the pool, aquatic plants such as water peanuts need to be put in the ponds, accounting for 1/3 of the water area, for their habitat and feeding. It is advisable to stock 3 kg to 5 kg per square meter indoors.
Feeding: In the previous stage of feeding, bait should be dominated by plant foods. Such as soaked or cooked wheat, soybeans, sweet potatoes, vegetables and so on. Each day, the amount of feeding is about 5% to 8% of the crab weight. It is fed once a day in the afternoon and then in the afternoon. It is fed from 10 a.m. to 11 a.m., and the feed is fed 30%, and it is fed from 4 to 5 p.m. 70%. In the latter stage of feeding, the animal protein content in the food should be appropriately increased, and small fish, shrimp, snail meat, and compound feed can be fed in an appropriate amount.
Greenhouse management: Do not open the greenhouse door for a long time or open the door frequently. If the agricultural film is damaged, repair it in time. Depending on the water quality, the water in the pool will be changed from 1/5 to 1/3 every 1 to 3 days when the weather is warm in the afternoon. As for indoor maintenance, in addition to maintaining ventilation, spray with fish pond water 3 times to 4 times a day to maintain a certain humidity.
Disease prevention: Mix appropriate amount of antibiotics in the feed every 1 week to 2 weeks. It is also possible to soak the feed in the liquid and feed it together with a small amount of residual liquid.
Everyone knows that there are a few longevity villages in China, and I live in one of them. I have lived here for 22 years, where chrysanthemums are everywhere and fragrant. Every morning, Grandma would make a pot of chrysanthemum tea and do other things after drinking. Grandma said, "Chrysanthemum can be used as medicine to cure diseases, chrysanthemum tea can make people live longer, chrysanthemum can also be made into exquisite delicacies." Grandma often cooks a dish called "chrysanthemum meat", "chrysanthemum meat" is a kind of chrysanthemum which has been made through long-term exploration. It is made from a piece of white tender pork processed by boiling sucrose pulp. It*s exquisite and exquisite, like white jade. Each piece is covered with a few chrysanthemum petals, which are full of fat, sugar and sweetness. The golden color is observed. The meat in the mouth is vegetable, and the meat in the vegetable is sweet and not greasy. It is really a famous dish. Grandma said that her ancestors did so. Slowly, everyone used it, and the village gradually became a longevity village.
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