饰棍蓟马生物学特性观察及药剂防治试验

Biological Characteristics of Dendrothrips ornatus and Test on Control by Pesticide

饰棍蓟马(Dendrothrips ornatus)在浙江丽水以成、若虫刺吸危害小蜡(Ligustrum sinense)和金叶女贞(L.vicaryi),1 a发生多代,以成虫在地表和枯枝落叶层中越冬,翌年3月上旬出蛰活动,12月上旬开始越冬;一年中有两个危害高峰,分别为4、5月和9、10月。5种药剂防治试验表明,1.8%阿维菌素乳油的4 000倍液、480 g/L毒死蜱乳油1 000倍液、77.5%敌敌畏乳油2 000倍液、0.5%二甲基二硫醚乳油2 000倍液、3%啶虫脒微乳油2 000倍液对饰棍蓟马成虫均有良好的防治效果。

Dendrothrips ornatus damages to Ligustrum sinense and L.vicaryi by piercing-sucking with both adult and nymph in Lishui,Zhejiang province.It has many generations a year,overwintering in land surface or litter with adults.It revives in early March,and starts overwinter in early December.There are two heavy damage periods a year by this insect,respectively from April to May and from September to October.Control test with 5 pesticides indicated that 4000 fold of 1.8% abamectin EC,1000 fold of 480g/L chlorpyrifos EC,2000 fold of 77.5% DDVP EC,2000 fold of 0.5% dithioether EC,and 2000 fold of 3% acetamiprid ME had good effect for control of adult.