几种杀虫剂对黄曲条跳甲的田间防治效果
2017-07-13梁明然黄东瑞
梁明然 黄东瑞



摘要 [目的]筛选黄曲条跳甲的防治药剂。[方法]于2015和2016年采用小区试验研究6种药剂对黄曲条跳甲的防治效果。[结果]5%啶虫脒乳油和15%哒螨灵乳油对黄曲条跳甲的防治效果最好,药后2 d防治效果在90%以上,且持效期较长,药后7 d防治效果仍超过60%;45%马拉硫磷乳油和90%敌敌畏可溶液剂对跳甲的防治效果也较理想,药后2 d防治效果均在80%以上。[结论]试验结果为黄曲条跳甲的有效防治提供了参考。
关键词 黄曲条跳甲;杀虫剂;防治效果
中图分类号 S436.3 文献标识码 A 文章编号 0517-6611(2017)13-0149-02
Field Trials of Several Pesticides against Phyllotreta striolata
LIANG Ming-ran, HUANG Dong-rui
(Center of Demonstration and Amplification for Agricultural Fine Breed, Zhaoqing, Guangdong 526060)
Abstract [Objective] The aim was to screen out chemicals for controlling Phyllotreta striolata. [Method] We studied control efficacy of several pesticides against Phyllotreta striolata through field trial. [Result] The 5% acetamiprid EC and 15% pyridaben EC were most effective against P. striolata with their control efficacy all over 90%. 45% malathion EC and 90% dichlorvos SL had significant effect on P. striolata, the control efficacy were all over 80% at 2nd day after treatment. 5% acetamiprid EC and 15% pyridaben EC had a long term effect in the field with their control efficacy all over 60% at 7th day after treatment. [Conclusion] The results provide reference for controlling Phyllotreta striolata effectively.
Key words Phyllotreta striolata;Pesticide;Control efficacy
黃曲条跳甲(Phyllotreta striolata)是十字花科蔬菜的主要害虫之一,在各蔬菜种植地区均有发生,在我国分布广泛,其成虫、幼虫分别在地上植株及土中根系为害,防治难度大,严重威胁蔬菜的高产稳产[1]。近年来,广东菜区黄曲条跳甲的抗药性明显上升,为了有效地防治黄曲条跳甲,笔者研究了7种药剂对该虫的田间防治效果,为防治黄曲条跳甲药剂的选择提供参考。
1 材料与方法
1.1 材料
1.1.1 试验对象。试虫为黄曲条跳甲。
1.1.2 供试药剂。共6种药剂,药剂名称和生产单位见表1。
1.2 试验方法
田间药效试验方法参照《农药田间药效试验准则》(一)(GB/T 17980.18—2000)[2]。于2015和2016年在肇庆市怀集县岗坪镇红星村菜场进行。供试作物为菜心,分别于2015年9月5日和2016年9月11日播种,生育期100 d。按随机区组设置试验小区,小区面积为50 m2。各药剂按设计浓度对水后喷雾,喷至叶片药液开始滴落为止。每处理4次重复。施药前和施药后的第1、2和7天调查,每小区随机选取20株菜心调查成虫数量,计算虫口减退率和防治效果。……
