蒋林 彭思颖 常明山 温文照 唐文泉 蒋学建

摘要 对广西国有钦廉林场受肉桂双瓣卷蛾和潜叶蛾危害的樟树人工林在用药防治前后的受害株数与总虫口数量进行统计，比较2种樟树害虫在农药影响下的种群动态变化及不同药剂的防治效果。结果表明，樟树肉桂双瓣卷蛾于当年4月下旬开始出现，在人为药防的干预作用下，其虫口数量总体上呈波动状态。药防效果随时间减退，且暴发期虫口数量增加的速度相对较快，防治后一段时间虫口数量降低，但随时间推移，虫口数量逐渐回升，出现峰值。说明在一定药效期内，农药对肉桂双瓣卷蛾幼虫的发生具有抑制作用。

关键词 樟树;药剂防治;种群动态;肉桂双瓣卷蛾;潜叶蛾

中图分类号 S 763.42  文献标识码 A  文章编号 0517-6611（2021）23-0163-02

doi：10.3969/j.issn.0517-6611.2021.23.045

Analysis of Chemical Control’s Effects and Population Dynamics on Polylopha cassiicola and Lyonetia  sp.

JIANG Lin1， PENG Si-ying2， CHANG Ming-shan2  et al

（1.Guangxi State-owned Qinlian Forest Farm， Qinzhou，Guangxi  535000;2.Guangxi Zhuang Autonomous Region Forestry Research Institute， Guangxi Engineering Research Center of Natural Enemy Breeding of Forestry Pests， Nanning，Guangxi  530002）

Abstract The number of damaged plants and total population of camphor plantation damaged by Polylopha cassiicola and Lyonetia sp.  in Qinlian forest farm of Guangxi were counted before and after drug control， and the population dynamics changes of two camphor pests under the influence of pesticides and the control effects of different pesticides were compared.The moth began to appear in late April of that year. Under the intervention of man-made drug control， the number of moths fluctuated on the whole. The effect of drug control decreased with time， and the number of insect population increased relatively rapidly during the outbreak period. The number of insect population decreased for a period of time after control， but with the passage of time， the number of insect population gradually rebounded and peaked. The results showed that the pesticide had an inhibitory effect on the occurrence of the larvae of Polylopha cassiicola. The number of moths also decreased significantly after treatment， but then increased. This study provided a theoretical reference for the prevention and control of Polylopha cassiicola and Lyonetia sp..

Key words Cinnamomum camphora;Chemical control;Population dynamics;Polylopha cassiicola;Lyonetia sp.

基金項目 广西林业科研与推广项目（gl2018kt06）;中央财政林业改革发展资金（桂林财发〔2020〕5号）。

作者简介 蒋林（1973—），男，广西博白人，高级工程师，从事病虫害防控技术研究。

通信作者，教授级高级工程师，从事林木有害生物防治技术研究。

收稿日期 2021-03-24

樟树（Cinnamomum camphora）别名樟木、芳樟等，属于樟科（Lauraceae）樟属（Cinnamomum）常绿大乔木[1]，是我国长江以南亚热带地区地带性植被常绿阔叶林重要的树种之一，广泛分布于我国长江以南、西南各省以及台湾南部等各省市区[2-3]，樟树在珍贵用材、油料、药用、园林绿化和生态等方面有极为广泛的应用[4-5]。随着对樟树资源价值认识的深入及其开发利用技术的提高，人工林的种植面积不断扩大，樟树……