2种药剂复配对黄瓜根结线虫的防治效果研究

Control Effect of Abamectin Combined with Fluopyram on Meloidogyne incognita Chitwood in Cucumber Production

为了测定阿维菌素和氟吡菌酰胺复配的60%阿维·氟吡菌酰胺水分散粒剂的防治效果及最佳用药量,采用田间试验,设置不同剂量60%阿维·氟吡菌酰胺水分散粒剂、0.5%阿维菌素颗粒剂、41.7%氟吡菌酰胺悬浮剂和清水对照共6个处理,检测不同剂量药剂对黄瓜根结线虫病的防治效果和对黄瓜产量的影响。结果表明:60%阿维·氟吡菌酰胺水分散粒剂在黄瓜苗移栽缓苗后进行灌根1次,对黄瓜根结线虫病有较好的防效,施药后75 d防效为79.26%~82.66%,收获期防效为75.36%~78.47%,对黄瓜安全,且产量显著高于对照,有较高的增产率,推荐剂量为540.0~720.0 g.a.i./hm^(2)。

A field experiment was conducted to evaluate the control effect of abamectin combined with fluopyram on the cucumber root-knot nematode Meloidogyne incognita Chitwood and determine the appropriate application amount.Six treatments were designed,including abamectin·fluopyram 60%water dispersible granules with different doses,abamectin 0.5%granules,fluopyram 41.7%suspension concentrate,and water control.The control effects and cucumber yields were compared between different treatments.The results showed that the root irrigation with abamectin·fluopyram 60%water dispersible granules for transplanted cucumber seedlings after field adaptation had a good control effect on the cucumber root-knot nematode disease.Specifically,the control effect was 79.26%-82.66%75 days after application and 75.36%-78.47%at the harvest stage.The combined agents were safe for cucumbers,and the yield in this treatment was significantly higher than that of the control.The recommended application amount of abamectin·fluopyram 60%water dispersible granules was 540.0-720.0 g.a.i./hm^(2).