不同杀虫剂防治枣大球蚧效果试验

Experiment of effect of different insecticides on preventing and controlling Eulecanium gigantea of fruit trees

通过不同杀虫剂对果树介壳虫的防效试验结果表明,40%速扑杀乳油,40%介克特乳油,48%乐斯本乳油对果树介壳虫越冬若虫防效好,在施药后25d防效分别达91.88%、89.77%和77.15%。参试药剂中48%乐斯本乳油、52.25%农地乐乳油,20%杀灭菊酯乳油,80%敌敌畏乳油对果树介壳虫初孵若虫施药后15d防效分别为99.44%、98.86%、100%和95.88%,一次使用可有效地控制果树介壳虫初孵若虫的危害。

Effects of different insecticides on preventing and controlling scale insects of fruit trees show: 40% Supracide emulsifiable solution, 40% methidathion emulsifiable solution, 48% Lorben emulsifiable solution have good prevention and control effect on winter nymph of scale insect of fruit trees . Control effect can be 9 1 . 8 8 % , 89.77% ,77.15% respectively 25days after application. Among these solutions participating in experiment, control effect of 48% Lorben emulsifiable solution, 52.25% Nurelle emulsifiable solution, 20% Sumicidin emulsifiable solution, 80% DDVP emulsifiable solution can be 99.44%, 99.86%, 100% and 95.88% respectively 15 days after application. One single application can effectively eliminate young nymph of scale insect of fruit trees.