昆明市板栗种植区的巨角多鳃金龟危害特点及成虫发生规律的调查研究

对以富民县、禄劝县为代表的昆明市板栗种植区的巨角多鳃金龟的危害特点及成虫发生规律的调查研究结果表明,昆明市板栗种植区发生的巨角多鳃金龟虫害,具有幼虫期长、隐蔽性强,危害板栗树根系使其致死率高,而成虫危害的寄主种类多等危害特点。该虫的暴发成灾与气候环境变化、栗园种植模式以及栽培管理方式等有十分密切的关系。巨角多鳃金龟成虫的发生期为5～6月份,高峰期为5月下旬;每晚20:30～23:30为其日扬飞活动的高峰期,该成虫具有极强的趋光性,成虫期的灯诱效果十分显著为2 490～31 760头/盏。因此灯诱捕杀是其成虫期的重要防治方法。依据调查研究结果,对昆明市板栗种植区的巨角多鳃金龟虫害提出了4点防治及管理措施。

Damage Feature and Adult Occurrence of Hecatomnus grandicornis in Chestnut Growing Areas of Kunming City

Choosing Fumin county and Luquan county,two main chestnut growing areas of Kunming city as study target,the damage feature and adult occurrence of Hecatomnus grandicornis were investigated and studied.The results showed that the damage of H.grandicornis in chestnut growing area of Kunming city was characterized by long period of larval phase,concealment,damaging root system and finally causing high ratio of death,and many plant species can be damaged by the adults of H.grandicornis.The outbreak of this pest...