青海云杉小卷蛾物候预测预报初步研究

A Preliminary Study on the Phenology Prediction of Neobarbara olivacea

青海云杉小卷蛾为云杉小卷蛾属新种,在青海西宁地区主要危害青海云杉,在我国青海西宁发生较为严重。由于小卷蛾虫体过小不易观察,危害隐蔽,监测、防治难度较大,蛹羽化期集中,一旦成虫出现,很快进入盛期,预报有效防治期很难把握,防治效果较差。经过三年观测发现青海云杉小卷蛾的生活史与青海云杉物候期有着密切的依从关系,以青海云杉物候观测为参照,可掌握青海云杉小卷蛾虫害的发生规律和最佳防治时期。

Neobarbara olivacea is main harm of Qinghai spruce in Qinghai Xining area, due to the it is too small not easy to observe, hidden hazards, monitoring, prevention and control is very difficult, pupa period concentration, once the adult emergence, soon to enter the period of effective control, prediction is difficult to grasp,the control effect is poor. After three years of observation found that life history of Qinghai spruce and Qinghai spruce as the reference pests. moth phenology has close relationship to compliance, Qinghai spruce phenological observation , the occurrence regularity and optimum control period can be master of Qinghai spruce moth