8%烯·丙·阿悬浮种衣剂研制及对大豆镰孢菌根腐病的防效

Development of 8% Uniconzole·Propiconazole·Abamectin Suspension Seed Coating Agent and Its Control Effect Against Fusarium Root Rot of Soybean

为研制一种兼防大豆根腐病和根部虫害的高效、低毒种衣剂,本研究采用菌丝生长抑制法测定了96%烯效唑(uniconzole)原药、96%丙环唑(propiconazole)原药、97%阿维菌素(abamectin)原药对大豆根腐病致病菌尖孢镰孢菌(Fusarium oxyporum)和禾谷镰孢菌(F.graminearum)的毒力,筛选最佳复配比,并利用湿研磨法制备种衣剂,进行室内盆栽苗的防效验证。结果表明,当烯效唑、丙环唑和阿维菌素的配比为5∶1∶2时,对2种镰孢菌抑制作用最佳。播种前,采用8%烯·丙·阿悬浮种衣剂0.2~0.5 g·kg-1处理大豆种子,能促进大豆出苗,且对大豆根腐病的相对防效达80.1%以上。本研究开发的8%烯·丙·阿悬浮种衣剂为进一步开展大豆根腐病和根部虫害田间防治奠定了基础。

In order to develop one kind of highly efficient and low toxic seed coating agent used for controlling Fusarium root rot and root insects of soybean. The virulence of uniconzole 96%, propiconazole 96%, abamectin 97%, and different mixture compounds on F. graminearum and F. oxysporum were tested using the method of hyphal growth inhibition, and the optimal proportion of the mixture compounds was screened. Furthermore, the seed coating agent was prepared by wet grinding method and the preventive effect was verified by indoor potted seedlings. The results showed that the inhibition of the mixture of uniconzole, tebuconazole, and abamectin at the proportion of 5∶1∶2 was the best for two Fusarium species. Before sowing, the soybean seed was treated with 8% uniconzole·propiconazole·abamectin suspension seed coating at 0.2~0.5 g·kg-1, which could promote soybean emergence and the relative preventive effect on soybean root rot infected by F. oxyporum was over 80.1%. This study provides valuable information for field application of 8% uniconzole·propiconazole·abamectin suspension seed coating agent in effective control of Fusarium root rot and pests of soybean.