With the development of aquaculture products such as astragalus, spiny-breasted frogs (stone frogs) and other special aquatic products, the use of earthworm as a bait and fresh bait has increased, and the area for breeding farms has continued to expand. However, some farms do not have a good grasp of breeding techniques. The breeding situation is not ideal, especially under the condition of not using shady greenhouses and improper management, it will often lead to a sharp drop in the number of earthworms, and cannot guarantee the needs of famous aquatic products. Now we will summarize the relevant techniques for aquaculture in greenhouses for reference throughout the culture. Biological characteristics 1 Living habits. The temperature of normal activity is 5°C-35°C, the suitable temperature for growth is 18°C-25°C, the suitable moisture content for the boring mill base is 30%-50%, and the suitable PH value is from the end of the 6th to the end of 8.7s. "Tai Ping II" also belongs to this species. It is generally 50-90 mm long, 3-5 mm wide, and weighs 0.45-1.12 g. It is a reddish-brown body, but it also has different body colors with feed, moisture, and light. Changes in depth. This type of earthworm has fast growth, high breeding rate, and is easy to feed at high density. It has the advantages of high yield per unit area and is the preferred breed for artificial breeding. 2 breeding. Scorpions are hermaphrodites, but they must be bred by allogeneic means to breed. Sexually mature pods (ie, fertility rings) spawn each week after mating, but the frequency of oviposition is closely related to humidity and temperature. When the temperature is 18-25°C, the humidity is 30%-50%, and the ventilation is good, one egg is usually spawned for 3-5 days. When the temperature is higher than 35°C or lower than 13°C, the number of eggs laid is significantly reduced. The suitable temperature for hatching of eggs is 18°C-25°C. The incubation time is short, about 20 days, and the hatching rate is high. Each ovary usually contains 2-4 calves, one less, and more than 5-6. The newly hatched cubs are fine and white as a line and reach sexual maturity after 40-50 days of rearing. The peak of nymphal reproduction is about 8 months, and it begins to die after 1-1.5 years. The site for the construction of aquaculture farms should be selected where livestock and poultry excrement are abundant, drainage is convenient, and water is available. Small-scale farming can make full use of some free space. When the aquaculture area is large, water pipes or automatic sprinklers should be installed. In addition, one or two storage tanks, reservoirs (or deep wells), and excreta are required. The sheds for quail farming are similar to vegetable sheds. The width of sheds is generally 5 meters. The length of sheds is 30-60 meters. The middle walkway is about 0.7 meters. If the dump truck is used for feeding, the width is 1 meter. The height of the walkway is about 0.3 meters, and the two trampolines on both sides are 2 meters wide. Ditches are made on the outside of the two trampolines for drainage. Fermented cow manure is accumulated and fermented for 5-10 days. It can be used after 1-2 times of turning and mixing. The moisture content is required to be 30%-40%. Pig manure should be fermented with 5%-10% (wet weight) comminuted straw (or other forage) evenly and then piled at a height of about 1m (water content is equivalent to cow dung), taking care to prevent stacking too much, 7- After 10 days, it is turned over and continued to be fermented. Generally after 2-3 days turning, the pig manure can be fermented and become soft. At this time, it can be used as a manure for raising clams. The quality of the manure fermentation is directly related to the level of production of the rearing mantis and must pay attention to this work. After the stocking ramming bed is ready, put the fermented pig cow dung into the trampoline. The stacking height of the material is about 20 cm. Leave a space of 20 cm on the side of the middle aisle for stocking. Before laying stocks, we should pour the boring bed first, and then put the quail species with manure on the side of pig manure in the trampoline. There is no certain requirement for stocking. However, avoid storing pig manure in a trampoline and then soaking, so as not to cause loss. Feeding management 1 Timing material. When timely feeding means that there is still 20%-30% feed in the boring machine, it is necessary to add ripened manure immediately after harvesting. The method of adding the manure mainly adopts the side addition method and the above strip addition method. In the hot summer season, pig manure can be poured into a paste-like fermentation in a lagoon and then poured directly onto the manure material in a strip form. If you do not add material and water for a long time, it will cause the carcass to shrink. If you cannot survive, you will die of autolysis. 2 moisturizing ventilation. Summer hot weather as far as possible to do watering once in the afternoon, the conditions of the unit is best to use deep well water or low temperature water, and combined with straw moisturizing, spring and autumn watering 3-5 days once in winter depending on the circumstances. When watering, it should be even and fine, and the impact of water should be small. In addition, in the hot summer season, the film around the greenhouse is opened to facilitate ventilation and cooling. 3 loose manure. In addition to the loosening of the manure material, it is necessary to loosen the manure material and loosen the soil once a month. Use shovels to loosen the soil and move it lightly. Try to avoid the surface of the eggs from being turned into the bottom of the manure, so as not to affect the hatching rate of the eggs. 4 Summer cooling. Every summer in July-August high-temperature weather, some cooling measures should be taken to strive to reduce the temperature of the manure in the trampoline to less than 30°C to facilitate normal growth and reproduction. One of the measures taken is to put a shady shade on the roof. In the summer, a blue plastic film is used, which is covered with straw woven curtains or shade nets. The second is to cover a layer of straw in the sheds on the shed. The third is to water and cool the water every afternoon. Do not use hot paddy field water. 5 winter insulation. Before the arrival of winter, do a good job of sealing and warming the greenhouse. Cover the rice straw in the shed on the shed. The conditional unit will cover the straw with a layer of film, and strive to control the temperature of the waste at a minimum of 10°C-15°C. Normal growth and reproduction. In the past few years, the enemy’s locusts have been bred and found that fleas have fewer diseases, mainly due to some predators. For example, crickets are harmful to crickets. They eat quail eggs first, then eat oysters, and then eat them in loose soil. When it is harvested, it will be put to death once it is found. In autumn and winter, some birds eat nothing in the wild and often come to eat eggs. In addition, mice, snakes, and ants are also predators.蚯蚓 Harvesting is based on the size of the breeding stock and the production needs to properly arrange the harvesting pods. The method of recovery is mainly to use a special iron flat thorn small tweezers to loosen the tamp material, and then pick out by hand the manure containing more dung and stack it on the plastic film, because the light is afraid of light for 15-20 minutes. After the chin gradually moves down until the plastic film, and then the surface manure gradually covered back into the trampoline, the last remaining is clean, this method is relatively simple and practical.
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