Relationship between nitrogen concentration and controlled atmosphere insecticidal time

The pest control effect of controlled atmosphere is closely related to the gas concentration and treatment time of grain pile. Compared with conventional stored grain, nitrogen modified atmosphere can effectively control stored grain pests, which solves the problems of single dependence of conventional stored grain on fumigant aluminum phosphide, increased pest resistance, increased dosage and increased difficulty in pest control, and provides a new method for stored grain pest control. However, the pest control effect is closely related to gas concentration, grain temperature and exposure time. Under the available nitrogen concentration, the lower the grain temperature, the required pest control rate is 100%.