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用溴甲烷熏蒸烟草苗床或育苗土壤,防治烟草苗期的病、虫、草害,作为烟草生产上培育无病壮苗的一项技术措施,这在世界主要的产烟国家已广泛应用。一、溴甲烷熏蒸烟草苗床(或土壤)的方法溴甲烷是一种有毒的液化气体,由于气体有强大的扩散力,它可以在薄膜覆盖的苗床(或土堆)里向各方位无孔不入地扩散渗透,从而达到灭虫、灭菌防病、除草的目的。
Fumigation of tobacco seedbed or nursery soil with methyl bromide, prevention and control of tobacco seedling diseases, insects and weeds, as a technical measure to cultivate disease-free seedlings in tobacco production, which has been widely used in the world’s major tobacco-producing countries. Methyl bromide fumigation tobacco seedbed (or soil) method Methyl bromide is a toxic liquefied gas, due to the gas has a strong diffusion force, it can be in the film covered seedbed (or mound) to all directions of all-pervasive diffusion penetration, So as to achieve pest control, sterilization and disease prevention, weeding purposes.