First, create a good ecological environment 1. Subtle inhabiting medium: 1 It is easy for Huanghua to freely move, "pillar" to brewing water and freely ingest food; 2 to create and maintain suitable temperature conditions; 3 to shade from light, free from outside interference; 4 to disperse population density. In addition, it is preferable to use a sulcus and inter-ditch type for soil aquaculture; for aquaculture without cages, dense grasses must be full of cages. 2. Water environment: It mainly includes water temperature, water depth and water quality. 1 water temperature. Rapid conservation should be maintained as much as possible between 21-28 °C water temperature; 2 water depth. Astragalus aquaculture should not be too deep. Practice has proved that Dianchi suitable water depth ranging from 5-20 cm. However, a large amount of artificial grasses can also be cultivated to support the normal life and rapid growth of the body of astragalus membranaceus in a deep pond or a soilless cage; 3 water quality. Astragalus is suitable for inhabiting in pollution-free, dissolved oxygen-rich water bodies. The water clarity is 25-40 cm, the pH is 6.5-7.5, the dissolved oxygen is greater than 5 mg/L, and the temperature is 4°C. The temperature near the surface of the water should not exceed 28 °C, otherwise it will affect the normal breathing of the jaundice. The solution is to plant plenty of plants and shade shelters. Second, scientific stocking 1. Select high-quality seedlings: Quick-breeding turtles should be selected from dark yellow with large dark spots, disease-free, no-injury, sensitive, and strong fighters. 2, a reasonable close-knit: According to the author's experience, conventional breeding, the individual stocking specifications of about 50 grams, the density of 2 kg is the most reasonable. At the same time, the stocking densities in the pools where there are many pools (such as sewer-type oyster pools), many plants, convenient water changes, and thorough effluent discharges can be increased; on the contrary, they should be reduced. The size of the Huanghua is large, and the total stocking weight can be increased; the size is small, and the total amount of stocking should be reduced. The stocking density with breeding experience is high; the inexperienced stocking density is small. 3, the size of the classification sub-pool: the size of the pool or the same cage with polyculture, the overall weight gain multiple is low, that the overall growth rate is slow, poor efficiency. The general purchase of "unified goods" should be kept at least three or more levels. The more grades they share, the more profitable the breeding and the overall rapid weight gain. 4. Dividing at a proper time: With the aquaculture growing, there are differences in the individual size of Astragalus in the same pool or in the same cage, and the disparity is increasing. When individuals differ by 1.5 times or more in size, small individuals begin to dare not compete with large individuals and cause nutritional deficiencies, slowing growth rates, wasting and failing until onset, and finally dying. Therefore, we must pay attention to the observation in the breeding process, and conditionally divide the culture in time. Third, to feed high quality foot food 1. Variety of bait: Baits fed by artificial breeding can be divided into three categories: live bait, fresh bait, and bait. In terms of the growth rate of artificial breeding, in the live bait, the growth rate of the alfalfa and the fly larvae is the fastest; in the fresh bait, the animals are fed with the fastest growth rate of the liver; in the combined bait, the preparation ingredients and processing technology Different growth rates vary. 2, bait processing: when feeding with hard shell and large fresh bait must be processed: the shell must be broken, the clam shell should be cut open and chopped meat, fresh fish, poultry and viscera to be chopped to the mouth of the yellow jaundice that is Swallowable size. The fresh material can also be minced into a paste by using a meat grinder and mixed with other materials to be processed into a mixed feed. Powdered foods or self-mixed materials can be processed into strips or granules by mechanical or manual feeding. 3. Feeding methods: After pupa feeding to normal feeding, daily feeding 1-2 times, water temperature below 18°C, daily feeding 1 time; water temperature 21-28°C, daily morning and evening feeding 1 Times. The daily amount of fresh bait is generally 3-10% of the total amount of bran, and the content of batch is 2-5%. Fresh ingredients were eaten in half an hour in 1 hour of batching. Fourth, to prevent the main elimination of pests and diseases 1. To establish an idea that focuses on prevention and prevention, and to implement every precautionary measure; once the onset of jaundice, it is more difficult to cure, and serious causes death. Even if the disease can be controlled, it will affect normal growth. 2. Take comprehensive measures to control and eliminate pathogens and cut off the route of transmission. 1 Scientific establishment: Choose a breeding ground with good water source, sufficient sunlight, sunny sunshine, quiet environment and no drought. The external environment and the Dianchi Lake itself are independent of the water inlet and outlet, the water flow is smooth, and the sewage is thoroughly discharged. The size, layout, depth, quantity, and other production management facilities of the Dianchi Lake are matched with the “internal†conditions; 2 the cleanup of the Dianchi Lake before stocking is well done. Disinfection; 3 refer to disease-free water; 4 seed species, baits, tools, disinfection; 5 regular feeding baits and disinfectant body. 3, try not to stimulate large drugs, such as the use of bleach, formaldehyde and other stimulant drugs in the short term will affect the normal eating of jaundice, delay the growth time of jaundice, it should try to find alternative medicine. Chemical Raw Materials,Pvc Raw Material,Dicyandiamide 99.5%,Cleaning Chemicals Raw Material Ningxia Darong Chemicals & Metallurgy Co., Ltd. , https://www.darong-cyanamide.com
How to speed up the growth of Astragalus
Due to the high selling price of commodities and the promising market prospects, there has been an upsurge of raising eels in recent years. However, due to the backward farming techniques, low survival rate of jaundice, and slow growth rate, many farmers have lost or even lost money. The author engaged in many years of astragalus cultivation and technical guidance work, is now combined with the practice of Huang Li average daily gain of more than 1 gram of practical experience, talking about how to speed up the growth rate of Astragalus.