How to raise earthworms in winter

During the breeding period, the shade around the earthworm bed should be cut off, the mulch should be reduced to a thinner degree after 10:00 in a sunny day, let the solar energy bask on the material bed, and then cover it again after 4 p.m. In winter, we need to take good heat preservation measures. We can use a double-layer film to clip a layer of grass curtain, which is 6 ℃ higher than the temperature covered with a layer of film, and it can play a role of cooling and regulation in March. At this time, the temperature of the earthworm breeding bed is 6 ℃ lower than that of the usual cover with a layer of film, which can effectively avoid excessive temperature.

1. Raising earthworms in winter needs to cut off all the shade around the earthworm bed, so that the sun can bask on the earthworm bed from morning to night, and the bed material left over in autumn will no longer be thinned, and the thickness of the bed will be increased by adding materials one by one. Before feeding, the soil of the old bed is shoveled to the center to form a long cone, and unfermented raw materials are added on both sides, and then water is added step by step to let it slowly ferment.

2. Wait for 7 days, then cover the soil of the central old bed, earthworms start to feed on the new material, flatten it out, wait for half of the new material to eat, then add the new material as mentioned above, reduce the cover to a thinner level after 10:00 on a sunny day, let the solar energy bask on the material bed, and then cover it again after 4 p.m.

3, during the mulch requires that the lower layer is 10cm thick loose straw or weeds, the top needs to be pressed with straw curtains or bags, and then covered with thin film, when sprinkling water, you need to spray directly to the material bed with a sprayer at noon in sunny days, and to keep the covered straw dry. When extracting earthworms, you need to take the outdoor bed in sunny days and the indoor bed in rainy days.

4. Although earthworms grow slowly in winter, because of the large number of backup earthworms, it will not affect the extraction amount of adult earthworms in winter. When the weather turns warm in spring, they will break down the heap and raise them.

5. Heat preservation measures need to be taken in winter. Many earthworm farmers will lay a thin film on the earthworm breeding bed. Although the temperature of the earthworm breeding bed is 8-10 ℃ higher than the high temperature on a sunny day, when the temperature is very low in the early morning, the earthworm breeding bed is only 1-2 ℃ higher than the outside world. When indoor breeding, doors and windows need to be blocked strictly to prevent cooling, and heating facilities such as stoves, walls or heaters can also be used.

6. At the same time, double-layer film can also be used to clip a layer of grass curtain, this method is simple and convenient, and the investment cost is less, the effect of increasing temperature and keeping warm is good, the temperature is 6 ℃ higher than that of covering a layer of film, and it can play a role of cooling and regulation in March. At this time, the temperature of the earthworm breeding bed is 6 ℃ lower than that of covering a layer of film, which can effectively avoid excessive temperature.

7. Earthworms are variable temperature animals, and their body temperature changes with the change of external environmental temperature, so earthworms are more dependent on the environment than constant temperature animals. Environmental temperature not only affects the body temperature and activity of earthworms, but also affects the metabolism, growth, development and reproduction of earthworms.

8. In general, the active temperature of earthworms is about 5-30 ℃, 0-5 ℃ will enter dormancy state, and below 0 ℃ will die.

9. The suitable temperature is about 20-27 ℃, which can grow, develop and reproduce well. When the temperature is 28-30 ℃, it can maintain a certain growth, stop when it is above 32 ℃, slow down when it is below 10 ℃, and die when it is over 40 ℃.

10. The suitable temperature for worm cocoon hatching is 18-27 ℃, which shows that the higher lethal temperature of earthworms is lower than that of other invertebrates.