“植物源线虫速杀剂”防治烟草根结线虫病的田间试验

Field Trials of Plant-based Nematicide Against Tobacco Root-knot Nematode

为了替代高毒性、高残留、高成本的化学杀线剂,进行了"植物源线虫速杀剂"对烟草根结线虫病的防治效果田间试验。移栽时一次性施用"植物源线虫速杀剂"15%可湿性粉剂(30 kg/hm2,45 kg/hm2),"线敌"5%颗粒剂(27 kg/hm2)和"阿维菌素"5%颗粒剂(45 kg/hm2)3种生物杀线剂以及对照药物"铁灭克"(13.5 kg/hm2)处理。结果表明:应用两种剂量的植物源杀线剂均能够有效防治烟草根结线虫病。在烟田较干旱条件下,小面积示范试验结果"植物源线虫速杀剂"防效达66.55%～72.23%,高于"铁灭克",明显优于"线敌",而"阿维菌素"的防效相对较差,田间示范试验与小面积示范试验结果一致。

In order to replace the chemical nematicides of high toxicity, high residue and high cost, the field trials were conducted to study the control effect of a plant-based nematicide against tobacco root-knot nematode. Plant-based nematicide 15%WP （30, 45 kg/ha） , microbial nematicides Xiandi 5% granule （27 kg/ha） and Abamectin 5% granule （45 kg/ha） , and Temik （13.5 kg/ha, CK） were applied at the time of transplanting, respectively. The results showed that the plant-based nematicide applied at the two different rates could control tobacco root-knot nematode effectively. At drought conditions, the control effect of plantbased nematicide in plot trials was between 66.55% and 72.23%, which was higher than that of Temik, significantly better than that of Xiandi, and the control effect of Abamectin was relatively lower. The results of field demonstration trials agreed with those of plot demonstration trials.