【摘要】 杜鹃冠网蝽(Stephanitis pyeioides)是严重危害杜鹃的害虫之一,在浙江省绍兴市1 a发生5~6代,以成、若虫在枯枝落叶、杂草或根际表土中越冬,翌年4月中旬越冬代成虫、若虫开始活动,至10月中旬开始越冬,世代重叠明显,全年所有发生季节均能发现各个虫态。5月下旬用1.8%阿维菌素乳油1 500倍液、森得保可湿性粉剂1 500倍液、5%吡虫啉乳油1 000倍液、20%杀灭菊酯乳油2 000倍液和80%敌敌畏乳油1 500倍喷雾防治,3 d后防治效果均达到100%。更多还原

【Abstract】 Stephanitis pyeioides Scott is one of serious pests harming on Rhododendron spp.It has 5-6 generations within a year in Shaoxin Zhejiang,and overwintering with adults and nymphs at debris,weeds or rhizosphere soil.In April in following year,overwintering adults and nymphs become active,damage,and overwinter again until the middle of October.The generation overlap apparently,and the eggs,nymphs and adults can be found in the whole developing season in one year.In the latter of May,Spraying with 1.8% Avermectin Ec 1 500 times solution,Sedebon Wp 1 500 times solution,5% imidacriplod Ec 1 000 times solution,20% fenvalerate Ec 2 000 times solution and 80% Dichlorvos Ec 1500 times solution can get effects 100% in the control of the pest after 3 days.更多还原