肉桂双瓣卷蛾危害香料用樟树矮林的发生特点与防控技术研究

Researches on characteristics of occurrence and green control technology of Cinnamomum camphora,a forest pest of camphor trees for spices

【目的】为了解江西香料用樟树矮林肉桂双瓣卷蛾生物学特性。【方法】采用野外观察和室内观察的方法对其生物学特性进行观察,了解其在江西的生活史。同时,采用冬季翻耕、修剪被害梢、释放天敌昆虫三种方法进行综合防治试验,与未处理植株进行对照,探究其防治效果。【结果】肉桂双瓣卷蛾在江西全省均有分布,主要危害香料用樟树矮林,较少危害行道树等高大乔木。肉桂双瓣卷蛾在江西每年发生5~6代,发生代数、时间与当地气温、湿度等气候因子有关,其幼虫有入土越冬的习惯,在冬季施肥时进行土壤翻耕,同时开展综合防控,对肉桂双瓣卷蛾的发生防控效果良好,防控效果可达91.6%,在实际生产中具有重要意义。【结论】肉桂双瓣卷蛾在温和、湿润的气候条件下每年发生6代,在高温干旱的气候条件下每年发生5代且发生量较少。采取冬季土壤翻耕的方法防控效果可达84.3%,而采取冬季土壤翻耕修剪受害梢、释放天敌昆虫的综合方法防控效果可达91.6%,此研究方法值得在实际生产中推广。

[Objective]This study was conducted to find the biological characteristics of Cinnamomum camphora in camphor forest of Jiangxi.[Method]Field observation and indoor observation were used to observe their biological characteristics and understand their life history in Jiangxi.At the same time,three methods,such as ploughing in winter,pruning the shoot and releasing the natural enemy insects,were used for comprehensive control experiments,and the control effect was compared with that of untreated plants.[Result]Cinnamomum diploptera was distributed in Jiangxi Province,mainly affecting camphor shrub and less affecting tall trees such as road trees.Five to six generations occurred every year in Jiangxi Province.The algebra and time of occurrence were related to local climate factors such as temperature and humidity.The larva had the habit of overwintering in the soil.Soil tillage was carried out when fertilization was applied in winter,and comprehensive prevention and control was carried out at the same time.The prevention and control effect on the occurrence of Cinnamomum camphora was good(up to 91.6%),which was of great significance in the practical production.[Conclusion]In mild and humid climate,6 generations of C.cinnamomum diapetalis occurred every year,while in hot and arid climate,only 5 generations occurred.The control effect rate of soil ploughing in winter reached 84.3%,and that of soil pruning combined with releasing natural enemy insects reached 91.6%.The method established in this paper is worth popularizing in the practical production.