The invention discloses an
earthworm open field breeding method in the Ningxia region. The method includes the steps of oversummer management, wherein a
straw curtain with the thickness of 2-3 cm covers a built
earthworm bed, proper watering is used for controlling the temperature of the
earthworm bed to be 10-30 DEG C and the
relative humidity to be 60-70%, the
straw curtain is formed by weavingmultiple
layers, and natural porous materials are wrapped in the multi-layer
straw curtain; overwinter management, wherein in the last ten-day period of October, bait with the thickness of 30-50 cm islaid on the earthworm
bed, after proper watering, a
drainage ditch is dug and covered with four
layers of covering objects from bottom to top, the first layer is a waste EVA shed
film making direct contact with the bait, the second layer is a straw curtain with the thickness of 5-10 cm, the third and four
layers are waste EVA shed films keeping the temperature of the earthworm bed to be 10 DEG Cor above, and a
high heat absorption layer is arranged between the third and fourth layers of waste shed films. The
survival rate,
disease resistance,
growth speed and average weight of earthworms bred through the earthworm
open field breeding method are all improved, the quality and yield of the earthworms are improved, and the soil improvement effect is remarkable.