几种土壤熏蒸剂防除烟草苗床杂草的药效试验

Effect of Some Soil Fumigants on Controlling Weeds in Tobacco Seedbed

摘要: 对35%"线克"水剂、98%"必速灭"微粒剂、32.7%"维博亩"水剂、32.7%"斯美地"水剂、33.6%"适每地"水剂、98%"棉隆"微粒剂和98%溴甲烷压缩气体等7种不同土壤熏蒸剂防除烟草苗床杂草效果进行了试验。结果表明,7种土壤熏蒸剂对苗床杂草均有较好的防除效果。播种后20d、40d时各处理对杂草数量的平均防效均分别达到95%和90%以上,几种试验药剂与对照药剂溴甲烷相当,可替代溴甲烷在烟草苗床除草中应用。

Abstract: Seven kinds of soil fumigant, 35% XianKe, 98% Basamid, 32.7% Metham-sodium, 32.7% Simeidi, 33.6% Shimeidi, 98% Dazomet and 98% methyl bromide, were tested to control weeds in tobacco seedbed.The results indicated that the average control effects of all tested fumigants were over 95% and 90% in 20 days and 40 days after seeding, comparable to the effect of check fumigant, methyl bromide.These fumigants could be used as substitutes for methyl bromide to control weeds in tobacco seedbed.