Astragalus intensive cultivation and fattening management technology
First, feeding bait seedlings enter the pool and start feeding the next day. The seedlings like to eat fresh food, fish, shrimp, yellow mealworms, cocoons, cockroaches and other animal feed, in normal production, such a large number of live bait It is difficult to guarantee supply. To do this, we must adopt a method of domestication. The domesticated food of Astragalus must be picked up from an early stage. It is generally 20 days after the seeds are planted in the pond. After adapting to the new living environment, the specific operating procedures for tame food and tame-breeding are: early use of fresh earthworms, mealworms, Cocoons and other skeined meat pulp are evenly mixed into the bait or squid feed by 20%, and it is best to feed 1 to 2 days before tame food. After successful domestication, the ratio of animal diets can be gradually reduced and fed in accordance with the scientific method of "Four Ding" according to the habit of feeding at night. The feeding can be done in the evening (18 to 19 o'clock in the afternoon) and In the early morning (5~6 o'clock), the feeding time is divided into 2 times. Each feeding amount can be flexibly controlled according to the water temperature in the pool. When the water temperature is 14~20°C, the feeding amount is 3% of the carp weight. 5%, when the water temperature reached 20~28°C, the amount of bait was 7%~10% of the carp weight. During the growing season, the amount of bait must meet the feeding needs of the yellow cricket. For example, if the bait is eaten in the evening, it is not enough to eat for the night. Otherwise, it will waste food and pollute the water. Such as lack of food will lead to mutual gluttony can eat, affect production. Animal food must be fresh, artificial diet should pay attention to nutrition, no rotten spoilage. Each pond can use cement plates to make 2 to 3 bait stations and feed the bait on the bait station. Second, water quality regulation `intensity ponds, water quality regulation is the key. The water depth of Dianchi Lake should be maintained at about 30 cm, and the water quality should be fresh and clean. The amount of dissolved oxygen is sufficient and the PH value is 6.8-7.8. In the initial period of culture (ie, early April to early June), 1/3 of the pool water is changed regularly every 3 to 4 days. After mid-June, it is a period of vigorous growth. With the growth of individual individuals of Astragalus, the amount of food consumed increases, and a large amount of excrement occurs. Precipitation is very easy to pollute the water quality. In addition to the regular replacement of pool water during this period, it is required to maintain constant flow of water in the pond to promote its rapid growth and development. When the pool water is changed, the inlet and outlet pipes are opened at the same time (the drain pipe is used as a bar screen) to make the water in the pool rotate, and some residual baits and excrement in the pool are concentrated at the outlet. In the summer and autumn hot seasons, in order to prevent sudden changes in water quality, appropriate amounts of water hyacinths, water lettuces, or water peanuts and other aquatic plants are placed in Dianchi Lake, and bamboo scaffolds are used to control 1/3 of the pool area. In order to adjust the pH of the water body, 7PPM lime water is poured every 15 to 20 days. Third, grading rearing for 1 to 2 months of feeding, the individual in the same quagmire gnawing uneven, if you continue to keep the same pool, will inevitably appear to eat small phenomenon, thus affecting the survival rate, for this purpose to screen grading culture. The specific method of operation is: Gradually sizing puffer fishes of different sizes into different fishing ponds. After one to two years of grading and rearing, the individual larvae in each pond will tend to be consistent. Huang Hao's commodity rate is above 90%. Fourth, disease control 1. Fever. The disease is mainly caused by excessive stocking density, a large amount of mucus secreted on the carcass surface, which accelerates the decomposition of microorganisms in the water, and causes consumption of dissolved oxygen and heat in the water. If the disease is serious, the whole carp will be entangled in the pool. Together form a mass, mixed 2 ~ 3 kg of loach can reduce the incidence of the disease. If this disease occurs, pool water should be replaced immediately, and per cubic meter of water, 100 grams of garlic, 50 grams of salt, and 150 grams of mulberry leaves should be mashed into a sprinkling pool and sprayed twice a day for 2 to 3 days. 2. Parasitic disease. The disease caused by parasites mainly includes capillary nematodes and thorny head worms. They are often parasitized in the intestinal tract of the jaundice, penetrate into the intestinal wall or intestinal mucosa, destroy the intestinal mucosa, absorb nutrients, cause intestinal congestion, inflammation, and obstruction. Intestinal tract, prevention and control methods: feed every 5 kg of Astragalus with 5 g of 90% crystal trichlorfon and feed it in the bait, and it can be cured after feeding for 6 days. Evacuation Chair,Emergency Evacuation Chair,Emergency Powered Evacuation Chair,Electric Evacuation Chair Evacuation Chair,Emergency Evacuation Chair,Emergency Powered Evacuation Chair,Electric Evacuation Chair Medton Medical , https://www.medtonmedical.com