Bullfrog is a high value amphibian, it is also an important agricultural farming program, before farming we should pay attention to the construction of the bullfrog farm site, which is also the basic work of the farming, then, how to build a bullfrog farm? Here is a look at the bullfrog farm construction program. First, bullfrog farm construction technology Bullfrog farms should be selected in the place where there is water, land, quiet, warm, good vegetation, rich in plankton and all kinds of insects, loamy soil and electricity access. According to different breeding methods, corresponding frog farms should be built. Currently, there are mainly two types of frog farming methods: natural proliferation and artificial breeding. The former has low production costs and low yields, but large yields, which are more suitable for large-scale popularization in China; the latter has slightly more investment and high yields, which are suitable for farmers to develop in the suburbs. Natural proliferation is the use of natural environment and natural bait to raise frogs, the man-made part is limited to circle the scope of raising frogs, putting frog species and harvesting commercial frogs. 1. In the mountainous areas, in the small basins surrounded by mountains on all sides or in the places surrounded by mountains on three sides and two mountains in the center of a Tao, you can use the mountains as a natural barrier for the bullfrogs to escape, build a 1.5-meter-high fence in the gap of the mountains, and put a certain number of species of frogs in the waters suitable for bullfrogs to reproduce. After two years or even longer, the mountain will be closed for breeding frogs and natural proliferation will be carried out. When the frog population reaches a certain size, planned, scientific and reasonable hunting and trapping will be carried out. The cost of this production method is the lowest, and it can provide the society with a large quantity of high-quality edible bullfrogs. 2, the reservoir reservoir area should be selected to increase the culture of suitable reservoir bay dam construction, in order to form a small outlet, belly wide, bottom flat, back of the mountain towards the south, light, water surface of the vast environment for frog farming. The height of the dam should exceed the general water level of the reservoir by more than 1.5 meters. Gates, spillways or drainage culverts should be installed on the dam. When the bay is dry or the water level is at its lowest, clean up the bottom, eliminate the enemy pests, and then build an escape-proof fence on land around the bay. When the water level rises, open the gates and release water into the cove. After that, the gate will be closed, and start stocking frog species, the specification of 20-_25 grams of young frogs is good, the frog species should be released at a time. Then fertilize the water in the bay, and at the same time, use the open-air culture method to produce earthworms or fly maggots in large quantities for the bullfrogs to feed on. The raised commercial frogs can be marketed as commodities, and can also be selected as seed frogs to be put into the whole reservoir, which makes the reservoir a large-scale natural bullfrog breeding ground. 3, lake frogs choose the water depth of 1-2 meters of the lake branch, in the narrowest place with bamboo piles or reinforced concrete columns straight rows of piles, built not to leave the foil door of the frog foil, the lake branch and the lake separated. Along the shore of the lake branch should also build a fence to prevent escape. The bottom of the foil must be firm, leaving no holes, and the top of the foil should be about 1 meter above the water surface. Next, the water body in addition to the wild, can be used to fish vine essence (0.05 grams per cubic meter of water) poisoned. 7?IO days after the frog species can be placed, the density of stocking per square meter specifications for 20 ~ 25 grams of young frogs 70, or specifications for 250 grams of adult frogs 10-20, or just grow out of the hind legs of the tadpole 140 ~ 150 or so. Attention is paid to preventing natural enemies, such as snakes, rats, birds, and carnivorous fish, and fishing is prohibited for l~2 years. After more than 2 years of proliferation, commercial frogs can be hunted systematically according to the population size to be marketed. If there are too many tadpoles or young frogs in the lake branch, some of them can be transferred to other lake branches or the whole lake area to expand the proliferation. 4、River and ditch frogs choose better conditions of the river ditch, in its spacious water surface, there is a section of slow-flowing area, at both ends of the water shallow area to build two foils, along the sides of the wall to prevent escape. In addition to the wild in the surrounded water body, after that, that is, put the frog seed or species of frogs, to carry on the natural increase of culture. 5、Rice paddy frog farming selects fields with sufficient water source, convenient drainage and irrigation, and strong water and fertilizer retention, and it is best to enclose and block together with nearby lotus root fields and ponds, that is to say, it becomes a more ideal bullfrog farm. After the stocking of frogs, the depth of water in the paddy field is generally kept at 10 centimeters. When the paddy field needs sunshine, fertilizer or spraying, the bullfrogs can enter the lotus root field or pond to live and rest. If you just encircle the paddy field to raise bullfrogs, then you must dig an area of a few square meters near the inlet and outlet of the field, a protection pit 60-80 cm deep, and wells around the paddy field to dig a protection ditch 30-40 cm deep and wide, so that the pits and ditches are connected. In the north, when raising bullfrogs in paddy fields, it is still necessary to dig deep pits next to the fields where water can be stored for more than 1.2 meters, so as to ensure that the frogs can overwinter safely. 6. If there is a courtyard with an open area of 67 square meters, a 30-square-meter pool can be built to keep the depth of the pool at 40 centimeters, and the wall of the courtyard is an escape-proof wall. Plant vegetables or fruit trees in the soil next to the pool, and cultivate earthworms with livestock compost, install 1-2 black lights on the pool to attract insects, and stock 500-1000 bullfrogs in the pool. In this way, tens of kilograms of edible frogs can be harvested every year. Principles of bullfrog farm construction 1. The farm should conform to the living habit of frogs as much as possible. Choose the area with secluded natural environment, bushy plants and close to the water. Where there are factories, automobile traffic, frequent human activities in the environment, often noisy sound, vibration, serious places, should not be used as a place to raise frogs. Especially the site for breeding frogs should consider these factors carefully. If you choose an open area as a breeding site, you should make necessary artificial modifications to the ecological environment. The vegetation should be increased by planting grass and trees or economic crops such as melons and fruits. The best place to feed is warm in winter and cool in summer, and it is better if the ground can be slightly tilted to the southeast. This terrain has a large area of sunlight irradiation, ground temperature, water temperature rises faster, in the summer can also be affected by the southeast monsoon, fluctuations in the surface of the water can increase the amount of dissolved oxygen in the water, on the frog and its bait in the water reproduction and growth are favorable. 2, the farm must have a guaranteed water source and convenient drainage and irrigation. Convenient water source can effectively control the water temperature, dissolved oxygen in the water and pests, which is conducive to the growth of frogs and overwintering. The farm should be free of drainage and irrigation, which is good for the regulation of pool water in normal times, and will not cause flooding when there is heavy rain, and can supply water in time when there is drought. Some farms may use water in connection with farmland irrigation, so they should consider whether there is any contradiction between the two and make corresponding preparations, so as to avoid unnecessary losses in the early days or flooding when the two cannot be taken into account. 3, the farm should try to build in the bait resource-rich places Bait-rich places can provide a large number of natural food sources, such as insects, plankton, snails, loaches, small mixed fish and shrimp and other bait, which can reduce feed costs. Or there are abundant and cheap raw materials and land for bait production in the area, e.g. there are livestock and poultry farms nearby with a large supply of animal manure, or there are food processing factories that sell offcuts. If there are frogs nearby to produce synthetic bait for sale, it is more convenient to use. 4, outdoor breeding should also be considered to facilitate the construction of escape facilities because frogs are good at jumping, drilling, crawling, the need to build escape fences, escape fences, one can prevent the breeding of frogs fleeing; the second is to prevent the invasion of wild frogs, water rats and other foreign pests, the destruction of breeding frogs eggs and tadpoles. 5. Supporting facilities related to farming should be ready or easy to build. Various factors such as working rooms and warehouses for farming, electricity for production and living, transportation conditions, ventilation conditions and production, supply and marketing should be taken into consideration. This is not only convenient for daily management, but also conducive to the sale of products. Through the above introduction on how to build a bullfrog farm, we now know the bullfrog breeding base construction program, bullfrog is a wild amphibian, adaptable, no matter the mountains, plains, towns, rural areas, as long as there is a water source can be farmed. Breeding sites can usually be divided into two kinds of indoor and outdoor, we need to pay attention to reasonable construction methods.