The feed formula for earthworms is:
Straw and cow dung: Use straw and cow dung to make compost. The temperature is adjusted between 20 and 25°C, and the upper cover of the container is shielded from light.
Dissolve the recycled waste paper in water and mix it with 20% cow dung; add 20% dry cow dung into the paper mill sludge containing 85% water; or use 40% paper mill sludge, 40% activated sludge and 20% sawdust are used as feed.
When formulating feed, attention should be paid to preventing harmful substances from being mixed into the feed. When selecting feed, pay attention to whether it contains pesticides, chemicals, inorganic salts, aldol organic solvents, etc. At the same time, it should be noted that the salt content in the feed cannot exceed 2%, otherwise it will cause the death of earthworms.