Weeds Control on Seed-bed for Nicotiana Tabacum Using Different Soil Fumigant

The results showed that using the four fumigants on seedbed of nicotiana tabacum has significant effect on controlling the weeds of the seedbed and clearly superior to the counterpart medicament(Methyl Bromide).Colligating the factor of control effect,safety etc it can be gated: 32.7% of SMDC and 35% of Xianke was best,so we suggest that they should be put into operation in Anhui Province.