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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。
The water-based agent of 35% “line of grams ”, 98% “speed will be off ” particles, 32 7% “ 33 different kinds of soil fumigants, such as 6% ”suitable place “ agent, 98% ”cotton powder " and 98% methyl bromide compressed gas, were tested to control weeds in tobacco seedbed. The results showed that seven kinds of soil fumigants had better control effect on weeds in the seedbed. The average control effect of weeds on the number of weeds was 95% and 90% respectively at 20d and 40d after sowing. Several test agents were comparable to the control agent methyl bromide, which could replace the application of methyl bromide in weeding of tobacco seedbed.