溴甲烷对烟草育苗综合效应的影响

Effect of Methyl Bromide on Tobacco Grow Seedlings Comprehensive Effect

本试验结果表明：对烤烟来说出苗期和出苗后21天，溴甲烷各处理对杂草防效分别为99.4～100％和98．7～100％；对晒烟来说，分别为96．4～97．3％和97．1～97．7％；溴甲烷熏蒸，经济效益最高，比蒸汽消毒节省32．4％，比无处理节省76％,溴甲烷熏蒸与蒸汽消毒及无处理对烟草生长发育和农艺性状的影响差异不大．

The results of experiments showed that all treatments with Methyl Bromide were effective in controlling weeds, for flue - cured tobacco 99. 4 ~ 100%, for sun - cured tobacco 96. 4 ~97. 3 % during the appearance of seedlings, and for flue - cured tobacco 98. 7 ~ 100%, for suncured tobacco 97. 1 ~ 97. 7 % the appearance of seedlings after 21 days. Economic benefits were the best with Methyl Bromide fumigation. It economized 32. 4 % more than moist - heat sterilization, and 76 % more than no treatments. Effect of the growth of tobncco and ngronomy chnrncteristics was not very different with Methyl Bromide fumigation and moist - heat sterlization and no treatments.