不同施药方式对番茄上烟粉虱防效的比较

A Comparative Study on the Effects of Different Methods of Pesticide Applications on Control Efficacy of Bemisiatabaci on Tomato

[目的]筛选出防治烟粉虱高工效的施药方式,为烟粉虱的防治提供科学依据。[方法]在京郊温室中,应用热力烟雾机、常规喷雾、静电喷雾、超低容量喷雾和灌根5种施药方式防治番茄上烟粉虱。[结果]应用热力烟雾机施药对烟粉虱可以取得良好的防治效果,在用柴油作稀释剂时,防效在75%以上。应用热雾剂防治烟粉虱,防效在82%以上,减少1/3用药量,防效与常规常量喷雾施药方式比较无显著差异。[结论]热力烟雾机在烟粉虱的田间防治中可大面积推广应用。

[Aims] The five pesticide application methods were evaluated in order to selectout the effective application methods to control Bemisiatabaci. [Methods] In the greenhousesof Beijing suburbs, fiveapplication methods of thermal foggenerator, manualknapsack sprayers, electrostaticsprayers, ULV sprayers and root drenchingforcontrolling Bemisiatabaci on tomato were carried out. [Results] The application of thermal spraying on controlling Bemisiatabaci showed good effect using diesel as a diluent with above 75% control efficacy. Hot fogging concentrate（HN） on control of Bemisiatabaci displayed control efficacy of above 82%, when the dosageof HN wasreduced by 1/3, there was no significantly differentcontrol efficacybetweenmanual knapsack sprayers and thermal fog generator. [Conclusions] Thermal fog generator could be used extensively to control Bemisiatabaci in the field.