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地瓜茎线虫病在地瓜种植区发生面积较大,危害严重,是较难防治的一种病害,尤其是存留在土壤中的地瓜茎线虫极不易杀灭。烟台地区农科所等单位,曾先后应用除线特、除线磷、杀线酯,二溴氯丙烷等一、二十种杀线药剂,均无效或效果甚低,无应用价值。近年来应用二溴乙烷,进行土壤处理,获得良好的防病增产效果。每亩用80％二溴乙烷乳剂2～3公斤兑水100～150公斤,在地瓜栽植前半个月,开沟均匀施入沟底部(沟距1.2尺,沟深5寸以上为宜)随即覆土踏实,半月后起垄栽植地瓜苗,收获期检查防病效果达85％左右,最高效果可
Sweet potato stem nematode disease occurred in sweet potato planting area larger, serious harm, is more difficult to control a disease, especially in the soil of sweet potato stem nematode is very easy to kill. Yantai Agricultural Science and other units, has been in addition to the special line, in addition to line phosphorus, kill line esters, dibromochloropropane and other one or two kinds of kill line agents, are ineffective or with very low effect, no application value. In recent years, the application of dibromoethane, soil treatment, access to good disease prevention and yield enhancement. Per mu with 80% dibromoethane emulsion 2 to 3 kg of water watered 100 to 150 kg, half a month before planting sweet potatoes, ditches evenly applied to the bottom of the ditch (ditch 1.2 feet, more than 5 inches deep ditch) then Covered with soil practical, half a month after ridge planting sweet potato seedlings, check the anti-disease harvest effect of about 85%, the maximum effect can be