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檫树长足象鼻虫Alcidodes sp. 是檫树的主要害虫,主要危害檫树的主梢和侧梢。连年受害的檫树,主干弯曲,生长受到严重影响。1979年6月至1981年9月,我们在江西省万载县官元山林场和仙源公社设固定观察点,对该虫的生物学特性与防治方法进行了研究。一、分布与危害从目前掌握的情况看,湖南、江西两省已有分布。据江西省近年病虫普查和专门调查,目前该虫仅分布宜春地区,以万载县分布较多,且受害较重。该虫主要危害檫树、樟树,其次危害猪脚楠、红枝柴。幼虫、成虫均可危害梢内髓心和木质部;成虫还可取食皮层、叶子和嫩梢。连年受害的主梢多头、丛生,主干弯曲。我们在不同的条件下,对22块标准地550株檫树进行了测定,平均受害率为71.7%,最高达100%。其中,主梢被害率平均为59.6%,最高达
Creeping tree weevil Alcidodes sp. Is a major pest of poplar trees and mainly harms the shoots and laterals of poplar trees. Year-old tree victims suffer, trunk bending, growth is seriously affected. From June 1979 to September 1981, we set up fixed observation points at Guanyuanshan Forest Farm and Xiangyuan Commune in Wanzai County, Jiangxi Province. The biological characteristics and control methods of this insect were studied. First, the distribution and damage From the current situation, Hunan, Jiangxi provinces have been distributed. According to the survey of pests and diseases in Jiangxi Province in recent years and a special investigation, the pest is currently only distributed in Yichun area, distributed more frequently in Wanzai County and harmed. The main insect pest tree, camphor tree, followed by endanger pig’s feet Nan, red branch firewood. Larvae, adults can endanger the medulla and xylem; adults can also eat the cortex, leaves and young shoots. The main shoot victims for so many years, clusters, trunk bending. Under different conditions, we conducted a total of 550 samples of 22 trees in 22 standard areas, with an average victimization rate of 71.7% and a maximum of 100%. Among them, the main shoot damage rates averaged 59.6%, up to