(I) Basic conditions
1. Pond conditions and supporting facilities: The drainage and irrigation of Dianchi Lake is convenient, the water is fresh and free of pollution, the water depth is 1 to 1.5m, and the normal water storage depth is 0.8 to 1.2m. The area ranges from several tens of square meters to a few acres. The pond should be laid with 15-20cm thick soft bottom mud, and the facilities for escape prevention and anti-stealing should be well-preserved. In the pool, an empty area of ​​1/10 of the water area should be reserved for drying. , set up a feed counter around the pond.
(B) Preparation before stocking
1, smashed into the bottom of the mud: After the seedlings into the pool due to environmental changes and scared to climb and lead to scratching the skin, infected bacteria and the incidence. Therefore, the first injection of water before transplanting 10-15cm, immersed for 3 to 5 days, with iron shovel flat bottom mud, rake 8 to 10 days, until the mud matured mud mud, and then put the seedlings, can reduce deaths, improve survival rate.
2. Disinfection of the ponds: The ponds are filled with water 0.4 to 0.5m 15 days before the lower pond, and they are disinfected with quick lime 100kg/mu.
3. Fertilizer water: After 7-10 days of clear pond, Shishu cooked manure 200kg/mu, cultivate the water to green, transparency 30cm.
(II) Stocking of seedlings
The selected seedlings are robust and harmless seedlings. It is best to breed in the local area and raise it to 15 to 30g and feed it into the pond one after another. Stocking density is 3-4/m2.
(III) Feed Feeding and Management
1, feed feeding
The wild yellow sand clams mainly feed on aquatic animals, small fish, small clams, snails, animal carcasses and other animal feed, or special turtle feed. At the beginning of each 5-10 months of the year, when the water temperature is 25-30°C, it is fed twice a day and fed at 8:00 am and 6:00 pm respectively. The daily feeding amount accounts for 5% of the carcass weight. From March to March of each year and from mid-October to November, due to the lower water temperature, less than 25°C, there is less activity and less food intake. It is only fed once a day at 10:00 am to 11:00 am: For 00 feeding, the daily feeding amount is 2%-3% of the body weight. When the water temperature is lower than 15°C, the cockroach is hibernating and is not fed.
2, water quality regulation
Every morning, in the middle and late in the evening, three times to inspect the pond, to keep abreast of the changes in water level, water quality, dietary status of fat and thin, and found that aphid feeding was significantly reduced, or slow crawling, and take timely measures. Keep the Dianchi Lake quiet during winter and do not stir the pool water.
During the aquaculture process, excretions and leftover baits of the yellow sand cocoon tend to cause deterioration of the water quality, resulting in harmful gases such as hydrogen sulfide, carbon dioxide, and ammonia, especially in the hot season. Therefore, we use EM (beneficial bacteria preparation) and photosynthetic apparatus. Bacteria, injection and exchange of new water and other ecological control methods to regulate water quality, reduce drug use, to create a good breeding ecological environment for the yellow sand turtle, improve product quality, achieve healthy breeding purposes.
(1) EM and photosynthetic bacteria are administered. EM or photosynthetic bacteria were released once every 20 days from May to September, and each EM 1.5 kg/mu or photosynthetic bacteria 2.5 kg/mu was released. EM and photosynthetic bacteria can decompose harmful substances, purify water quality, reduce drug use, prevent diseases, and improve product quality.
(2) Replace new water. Every 10 to 15 days, the new water is exchanged for one time, and the amount of water per change accounts for about one-fifth of the amount of pool water. The yellow sands generally require a water depth of 40 to 50cm, and the water depth during the high-temperature season from July to August reaches 80 to 100cm.
(d) Prevention and control of caries
Adhering to the principle of "prevention from prevention and prevention from over-regulation", Chinese herbal medicine can prevent and treat rickets because of its rich resources, low price, low residue, no pollution, small toxic and side effects, and low resistance to drug resistance. Greatly reduce the residues of toxic drugs, improve product quality, and achieve healthy breeding purposes. Every 15 to 20 days, 1 lime or bactericidal drug is sprayed on the whole pool to disinfect. At the same time, it is fed with allicin mixed with allicin, Banlangen or three yellow powders. Each time it is fed for 5 to 7 days to ensure the healthy growth of earthworms.
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