Toad. It is a highly valuable food and medicine amphibian and reptile. The toad's self-shedding shell, toad coat and post-auricular gland are collected and processed to produce the slurry toad venom, which is a valuable Chinese medicinal material. With the scarcity of wild resources, artificial breeding is imperative. Using rice fields to raise toads complements each other's advantages and can form a good cycle of the natural food chain. The relevant technical points are briefly described as follows.

1. Field and pond setting

Choose a relatively secluded field with convenient drainage and irrigation. The rice fields are surrounded by a 0.8-meter-high nylon dense mesh with an inner width of 1.5 meters to facilitate the movement of toads ashore, and mesh is set up at the water inlet and outlet to prevent toads from escaping. Dig a small pond on one side of the rice field to raise tadpoles. The pond area should not be less than 1/6 of the total area. If the breeding rice field is too large, several small ponds can be divided into several. The water depth of the ponds should be 40 centimeters, and a water injection pipe with a diameter of 1 centimeter should be set up above the ponds. A water outlet should be set up on any side of the ridge and surrounded by polypropylene mesh. The mesh size is preferably 60/square centimeter.

2. Tadpole stocking

First use 15 kilograms of quicklime to clean the small pond by dry method. After 7 days, fill it with water. Add 100 kilograms of fermented organic fertilizer to the pond. After 5 days, the tadpoles When entering the pond, select healthy, unharmed and neatly sized tadpoles. After being disinfected with 1.5% salt water, release tadpoles at a rate of 6,000 to 8,000 per mu of rice field. The temperature during release should not be lower than 20%.

3. Toad pond management

In small ponds, it is enough to ensure micro-flowing water while keeping the water quality from deteriorating under the action of remaining bait. When feeding tadpoles, it is appropriate to feed them in small amounts many times and with floating powdery self-prepared feed until they metamorphose. After the metamorphosis of the young toads is completed, a circular bait platform with a steel mesh bottom is set up in the center of the small pond. Live bait (earthworms, fly larvae, etc.) and floating granular materials are added every day. At the same time, water is added from the water injection pipe during feeding to make Floating pellets are used for feeding and domesticating young toads. At the beginning, the proportion of live bait is relatively large, and then gradually decreases. After the young toads have the habit of feeding at fixed points, the net enclosure of the small pond can be opened and the young toads can be put into the rice fields to forage freely.

4. Field management

After the young toads enter the rice fields, the water quality in the fields should be kept clear in advance. In hot summer, fields need to be irrigated frequently with "horse water" to adjust water temperature and quality. In addition, if diseases occur in rice, spray pesticides on a sunny day, with the nozzle facing upward, and the mist should be fine to prevent the pesticide from sinking. Once the drug deposition in the field is too concentrated, immediately inject water to adjust. Generally, there is no need to apply pesticides because toads have the ability to capture pests. Young toads should be protected from their natural enemies such as snakes and hawks in the field. Toads generally do not get sick under natural conditions, but attention should be paid to mechanical injuries that may cause traumatic infections. Therefore, special attention should be paid when arresting, and only cloth bags can be used to arrest. Two months after the young toads are put into the rice fields, they will be screened once a month to catch the big ones and leave the small ones. After they are caught, they will be placed in a special breeding pond to collect toad clothing and toad venom or sell them.