Cultivation of ground beetles in greenhouses is an efficient and cheap new breeding method because it is easy to raise the temperature by lighting and maintain a higher temperature in the greenhouse. The following is a brief introduction to this breeding method.

(1) To build a breeding greenhouse, choose a flat and sunny place, and build a slope-type plastic solar greenhouse facing north and south. The north wall is 2.5 meters high and the front wall is 1.5 meters high and 5 meters wide. The walls can be made of tamped soil or cement bricks. The ground should be smoothed with cement, and the top film should be covered with a double-layer polyvinyl chloride transplant film to increase the greenhouse temperature and extend the service life of the film. Use lamination wire to fix the film, install a small door on the gable wall, and leave a window on the other gable wall, see Figure 8.

"Figure 8 Model of ground turtle cultivation in greenhouses (2) Construction of single-layer or multi-layer breeding ponds. Single-layer ponds are made of bricks into several small ponds 40 cm high. The inner walls of the ponds are covered with ceramic tiles or glass strips , to prevent ground beetles from escaping. The pond can be built in two rows, with a walkway in the middle. The single-layer breeding pond is easy to manage and operate, but the utilization rate of the greenhouse is low and the profit is low. The breeding volume can be increased. In order to increase production and increase profits, use triangular iron or wooden strips to make a multi-layered rack, and place plastic pots on the rack. The distance between the layers is 40 cm, divided into three rows, front, middle and back, leaving two aisles ( Color picture 19). This can achieve the goals of easy management, uniform heating, and high economic benefits. (3) Temperature and humidity control in the greenhouse are the key measures for cultivating ground turtles. The optimal growth temperature is. 25~32℃. If it exceeds 40℃, it will be difficult to rest and even die. If it is below 7℃, it will stop moving and enter hibernation. Under the same conditions of accumulated temperature, take off the thatch early on sunny days to make full use of light, increase the temperature in the shed and store more heat. ; Cover with thatch to keep warm in the early afternoon. When the temperature is low at night, you can light the briquette stove in the greenhouse to keep the temperature above 25°C. You can also put a kettle on the briquette stove to keep the water in the kettle boiling. The temperature and humidity in the shed are balanced, which can overcome the shortcomings of being hot at the top and cool at the bottom. In winter, thick straw curtains or cotton curtains are used on the doors and windows to achieve the purpose of insulation. Different amounts of new soil need to be added to the pools and pots according to the age of the insects. The water content of the new soil is 20 to 25%.

Add 2 cm of new soil for 1st to 2nd instar worms; Add 3 cm of new soil; add 4 to 5 cm of new soil to the 5th to 6th instar worms; add 6 to 8 cm of new soil to the 7th to 10th instar worms; add 8 to 10 cm of new soil to the egg-laying worms.

Nymphs that hatch at the same time should be placed in the same pool or basin and raised to the third instar stage. They should be fed "ecdysone" frequently to make the ground beetles molt neatly, shorten the growth cycle, and increase production.