The utility model discloses a kind of
trichogramma release device for corn ear stage
pest control, it includes inside hollow release box, the middle part of release box is provided with the release passage of penetration, multiple placement cabins for placing
trichogramma egg card are formed by spacing plate around release passage inside hollow release box, and placement cabin and release passage are communicated by through-hole;Different kinds of
trichogramma egg card can be placed in the placement cabin of release box in the utility model, after trichogramma eclosion, fly out from release passage through through-hole, so that the eclosion of trichogramma is not influenced by external factors, so as to improve the eclosion rate and
survival rate of trichogramma.