Research on Pest Control with High Temperature,Vacuum Conditioning and Redrying

Focusing on the effectiveness and safety in pest control for stored tobacco,the treatments with high temperature and vacuum condition affected on the control effects to Lasioderma serricorne,the technological parameters setting in tobacco redrying and the effect of redrying temperature on smoking quality of tobacco leaf were experimented.The results indicated that:1) the tobacco beetles of all growth phases were killed in the oven of 100℃ in 4 minutes;2) in the vacuum conditioner,the higher the vacuum degree(the lower the temperature) was,the higher the mortality rate of adult,larva and pupae of tobacco beetles and the lower the hatch rate of eggs would be;when the vacuum was 99.02% and the temperature was 50℃,the tobacco beetles of all growth phases were killed in one minute;3) certain of the adults and larvas survived the higher temperature in tobacco redrying;however,the beetles could be completely killed by vacuum conditioning plus properly elevated redrying temperature.