Artificial three-dimensional high-density breeding technology for medicinal ground beetles

(1) Breeding density and temperature.

For breeding density, 0.4-0.5 kg of eggs is needed per square meter (hatching rate 70%-80%). When they grow to the 4th-5th instar, the temperature of the breeding room can be controlled by the body temperature of the insects (the breeding room can be built according to the three-dimensional constant-temperature method). Generally, 0°C is the hibernation period, and no heating is needed; 0-25°C is unsuitable for growth; 25-32°C is the most suitable for growth; above 40°C is the death period.

(2) Breeding density and the thickness of the rearing soil.

For 1st-4th instar ground beetles, the thickness of the rearing soil is generally 2-3 cm. As the ground beetles grow, the breeding density becomes increasingly high, and the thickness of the rearing soil should be gradually increased. The relationship between breeding density and humidity. If the density is too low, the ground beetles' activity level is low, which easily causes the rearing soil to harden and become unevenly dry and wet, affecting their growth (because the water needed for ground beetle growth is absorbed through their own body surface), and those severely short of water will die. When a certain breeding density is reached, through the activity level of the ground beetles, the humidity of the rearing soil can be kept uniform, and generally a generation cycle can be completed in 6 months. The breeding density must not be too high; generally, when the bottom of the pool is tapped with the hand, the appearance of a wave-like squirming state on the pool surface indicates the highest density.

(3) Breeding density and feeding management.

During feeding, properly controlling the breeding density is beneficial for controlling the amount of feed, and there will be no phenomenon of leftover feed or lack of feed. At the same time, it is beneficial for keeping humidity uniform, so that the ground beetles molt normally.

(4) Breeding density and economic benefits.

Under the same investment, high-density breeding can save energy and expenses and increase output.