河口县入侵害虫椰心叶甲的生物学特性及防治措施

椰心叶甲是棕榈科植物的一种危险性入侵害虫,属国家检疫林业有害生物,2005年在河口县首次发现.为了有效防治该害虫,2005～2006年在河口县观察研究了该虫的生物学特性.结果表明,该虫在河口县1 a发生6代,无明显越冬期,卵期3～10 d,幼虫期17 ～73 d,蛹期5～8d,成虫产卵前期9～30 d.完成一个世代需34～121 d,夏季历期较短,冬季历期较长.通过防治试验,提出椰甲清粉剂挂包法、树干打孔注药法、喷雾防治法、生物防治法等防治措施.

Biological Character and Control Methods of the Invasive Insect Pest Brontispa longissima in Hekou County

Brontispa longissima is a dangerous invasive insect pest firstly found in Hekou County in 2005,which belongs to the national quarantine forest pests of China.In order to control the insect pest,its biological character was observed in Hekou County from 2005 to 2006.The insect has 6 generations a year without distinct over-winter time.The eggs stage lasts 3-10 days,the larvae stage lasts 17-73 days,the pupae stage lasts 5-8 days,and the adult stage lasts 9-30 days before laying eggs.A generation lasts 34-121 days depends on seasons.The summer generation lasts a shorter time,and the winter generation lasts a longer time.Six control methods for the insect pest are proposed based on the field tests.