Application Researches on Fumigation by Combination Suifuryl Fluoride with Carbon Dioxide in Cereals

摘要

Based upon that median lethal dose (LD50)of such beetles against Sulfuryl Fluoride (SF) as Sitophilus zeamais, Oryzaephilus surinamensis, Rhizopertha dominica, Cryptolestes ferrugineus and so on have been tested, while fumigation for 14 16 days by combination SF, which at different concentration such as 3g/m3,5g/m3, 10g/m3and so on,with Carbon Dioxide at the concentration of 100g/m3,egg, larva and pupa of Sitophilus zeamais in wheat and maize bulks could be killed completely. Through fumigation by combination SF with Carbon Dioxide in grain stored granaries, it showed that the residual of SF left lower after fumigation, and meanwhile it also could control effectively adults,eggs,larva and pupa of some main grain storage pests,such as Tribolium castaneum（with phosphine resistance or sensitivity),Rhizopertha dominica (with phosphine resistance or sensitivity), Sitophilus zeama/s and so on.