PILOT RESEARCH OF SULFURYL FLUORIDE FUMIGATIONG ON PADDY IN FIELD

20g/m3 sulfuryl fluoride had been fumigated for 5 days in horizontal warehouse stored 2028t high quality long-grain non-glutinous paddy,recirculated 24 hours by recirculation blower in this period.The research showed that sulfuryl fluoride fumigating was effective on 7 strains the adult pests and F1 progeny of Sitophilus oryzae(L.),Sitophilus zeamais(Motschulsky),susceptible and resistant Rhyzopertha dominica Fabricius on phosphine,susceptible and resistant Tribolium castaneum(Herbst) on phosphine and Liposcelis,and also susceptible and resistant pests to phosphine have no difference in effect by sulfuryl fluoride fumigating.Influences of SF fumigation on paddy quality have no negative effects by measuring the samples on fixed and mixed points in this warehouse.Differ layers paddy samples of this two points were analyzed,the residues of fluoride were lower the MLs ordained by GB 2762-2005.