Small pond farming jaundice technology
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I. The construction of a rearing pond for the rational construction of Astragalus membranaceus should be constructed in a sheltered and sunny place near the water source. Small ponds can be constructed in the open spaces, earth pits, gutters sides, and field side corners behind the houses. The area of ​​Dianchi Lake is generally 50 square meters to 100 square meters. It is advisable for the small-scale cultivation of the garden to be about 10 square meters for each pond. The depth of the pool is from 1m to 1.5m, and it can be constructed of cement, bars, bricks, and triads, and must be cemented. The top of the pool wall should be made of “T†shape with bricks. The top of the pool hull should be over 30 cm above the water surface. The inlet and outlet pipes and overflow pipes must be firmly closed with barbed wire to prevent the yellow locust from fleeing. After the pool was built, 30 cm of soil was placed in the pool, and stones and bricks were put into the pool so that the crickets could play in the cave. The mud surface retains about 10 cm of water so that when the burrowing worms come out of their heads, they can look out for food or breathe. Finally, plant some aquatic plants on the surface of the pond, such as white pebbles, giant oyster mushrooms, water lettuce, etc., but require that they occupy less than half of the water.
Second, scientific stocking quail species Astragalus membranaceus after the disinfection of water, such as the water temperature rose to above 15 °C, you can put quail species. When the seeds are released, they should be soaked with 3% to 4% saline for 15 minutes to 20 minutes to kill their surface pathogens. At the time of release, the specifications for the same pond must be neat, ranging from about 30 to 40 per kilogram, with a stocking density of 50 to 150 per square meter. In order to maintain the smooth flow of water and air in the soil, 8 to 10 muddy louse can be stocked per square metre, allowing them to move up and down, improve the water environment and increase the dissolved oxygen level.
Third, pay attention to feed Feeding Astragalus is a meat-based omnivorous fish, especially like to eat live bait, such as small fish and shrimp, quail, fly larvae, snail meat, cocoon, poultry and other internal organs, but also feeding Some vegetable feeds such as rice bran, wheat bran, and bean dregs. After being accustomed to a certain feed, it is difficult for the astragalus to change its feeding habits, and it has the habit of nocturnal food seeking. Therefore, breeding and domestication must be carried out after the aphids have entered the pond. First, do not feed bait within 3 days to 5 days after entering the pond, and then use animal and plant feeds in combination with feeding. Feeding amount should be from less to more. Feeding time starts from the evening and gradually feeds in advance until it can eat a variety of compound feeds, and can feed at 9 o'clock in the morning and around 4 o'clock in the afternoon. Astragalus starts feeding when the water temperature is above 15°C and feeds vigorously when it is 25°C to 30°C. Therefore, feeding should be strengthened from May to September. The feed amount is generally 3% to 5% of the fish's body weight. During the peak season from June to August, the amount of feeding can increase to 6% to 7%.
Fourth, to strengthen the feeding and management Huang Hao likes to live in a body of water with sufficient oxygen. When it was found that the yellow crickets often head out of the water and their food intake decreased, indicating that the water was deprived of oxygen, the pool water should be replaced in time. During the spring and autumn seasons, the water changes from 6 days to 8 days, and the water changes from 2 days to 3 days in the summer. If there is a long-term flow of microfluidic water, it is better. At the same time, the bait or debris in the pool should be removed daily. When winter jaundice hibernates, the pool water can be drained, and a layer of straw or wheat straw can be laid on the bottom mud to keep it moist and moist. Because Astragalus membranaceus is a fish without scales and is susceptible to attack by pathogens and parasites, and because it is sensitive to many kinds of drugs, the prevention and control of diseases is of utmost importance. The common diseases of jaundice include watery mildew, plum spot disease, putrefaction disease, and fever.
