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1, Dianchi construction. Dianchi Lake should be located near the water source in front of the house. The area should not be too large, usually 10-20 square meters. The shape of the dike pool can be combined to beautify the courtyard environment, but do not build the pool behind the wall or at the corner of the courtyard. The Dianchi Lake is surrounded by bricks, cement and flattened, and has a 5-7 cm inverted wall. The bottom of the pond is made of triple soil. The depth of the pool is 1.2-1.5 meters. There are inlets, overflows and drains, and 15 cm above the bottom of the pool. Hard mud and 30 centimeters of fertile silt. Astragalus is a variable temperature animal, suitable temperature 20-30 °C, the water temperature is too high, to deepen the water level. In summer, shades are set above the pool with bamboo, asbestos or lug seats. Several households in my town used bamboo shoots on the side of the pool to plant loofah plants such as loofah, grapes, and lentils as shady shades. They not only played a role in shading and cooling, but also had oxygen-enhancement functions in Dianchi Lake, making full use of space. Stereo species farming.
2, seed sources. Courtyard breeding generally adopts 3 ways: one is to raise relatives, so that they breed naturally or artificially; the second is to raise young cubs; the third is to raise and raise crickets, using the price difference in the market. To adopt the first culture method, you must select the 2nd instar, 20-40 cm in length, and put certain plants in the pond. The stocking larvae are usually stocked in the late April of each year at a water temperature of about 20°C. Capture or purchase from the market requires a specification of 30/kg and a uniform size. Before bathing, bathe for 3-7 minutes with 3%-5% saline, and hospitalization of sickness and physical injury is prohibited. Stocking density is controlled at 3-5 kg ​​per square meter. As long as the price of Astragalus is available, it can be stocked at any time and checked in detail before entering the pond. Diseases and physical injuries are prohibited from entering the pool to prevent the death caused by grazing and causing undue losses. Stocking density is 7-9 kg per square meter.
3, daily management. The water depth in Dianchi Lake is maintained at about 30 cm. The water quality is clean. Generally, the water is changed once a week in spring and autumn. The water is slightly deeper in summer, and the water is replaced once in 2 days. Each time the water volume is changed to about half of the original pool water, the water is changed. The temperature difference should be lower than 2°C, the water source should be clean, and contaminated water must not be used. In winter, the temperature is low. In order to prevent the yellow locust from freezing to death, dry the pool water to keep the soil moist and cover about 5 cm of straw. Astragalus is a kind of live feed, especially animal feeds such as cockroaches, fly maggots, moths, snails, and slaughterhouses. It also feeds on plant foods such as rice bran, wheat bran, and cakes, according to local conditions. Choose to feed feed. Astragalus has a strong selectivity for feed, and changes in feed as little as possible throughout the feeding process. Feeding time is 5-7 points every evening, and the feeding amount is 3%-5% of body weight. It should also be combined with each feeding situation. If the food is eaten within 1 hour after feeding, it means that the feeding is insufficient and the food is not eaten for 3 hours. End description of feeding too much. An electric light bulb can be hung over the Dianchi Lake. At night, light can be used to trap insects for predation by the cricket. Rainy days, little or no feeding.
4, prevent escape, prevent enemy damage. The intake, overflow, and drain outlets of Dianchi Lake should be installed with fish traps or nets. The overflow outlet should be 5-10 cm below the inlet, and should be avoided during the summer rainy days. Intensive inspections are usually conducted to prevent water rats from eating jaundice.
5. Disease prevention and control. Astragalus is rarely sick, but it can also cause hydromycosis and parasitic diseases in poor feeding and management situations. Ping is every two weeks or one month with 0.2 mg/kg concentration of 90% crystal trichlorfon Quanchiposa or gall grated boiling Quanchiposa.
The use of courtyard houses behind the front of the house can not only adjust the market, increase the market size, but also obtain economic benefits. According to the practice of farming astragalus in my town in recent years, the breeding situation is now described as follows: