摘要
吉林省西部杨树防护林蛀干害虫的调查结果表明:白杨透翅蛾和青杨天牛的平均危害率分别为19.31%和11.98%,是杨树防护林的主要蛀干害虫。两种蛀干害虫的主要天敌均为啄木鸟和肿腿蜂,且种群数量很少,呈零星分布;害虫的种群变化与天敌的种群变化密切相关,据此可以对害虫的种群数量进行监测,并预测害虫大发生的可能性。对于没有实施过人为防治的杨树防护林,可以利用诱捕害虫数量与基础危害率的相关关系进行蛀干害虫的预测预报。
Investigation results of trunk borer of poplar protection forest in the west of Jilin Province indicated that as majortrunk borer, the average damage rate of Paranthrene tabaniformis Rottenburg and Saperda populnea L.was 19.31% and11.98%, respectively.The main natural enemy of them were woodpecker and Scleroderma guani, which were random distributionwith few population quantity.Population variation of trunk borer was associated with the population variation ofnatural enemy.Hence, population quantity of trunk borer shoud be supervised to predicte the possibility of trunk borer out -break.In poplar protection forest without human prevention , the correlation of quantity of trapped pest and basic harm ratecould be utilized to forecast trunk borer.
出处
《吉林林业科技》
2014年第3期34-37,共4页
Journal of Jilin Forestry Science and Technology
关键词
杨树防护林
蛀干害虫
天敌
预测预报
Poplar protection forest
trunk borer
natural enemy
forecast
