多纹豹蠹蛾发生规律的研究

Study on the Occurence Pattern of Leopard Moth.

多纹豹蠹蛾(Zeuzera multistrigata Moore)属鳞翅目豹蠹蛾科,是福建省沿海防护林木麻黄(Casuarina)的主要蛀干害虫。国内对此虫的发生规律研究,尚未见正式报道。国外分布于印度、孟加拉国、缅甸。一、研究方法(一) 生物学特性观察在惠安赤湖林场,莆田县山星林场设立研究基点。(1) 每隔3—15天定期上山解剖有虫株,1982—1987年共剖木5748株;(2) 在不同方同设立3个林间养虫室,种植有虫木;(3) 野外套笼1382株虫害木;(4) 室内水培苗木饲养,养虫笼木段饲养,玻璃培养皿盛木屑饲养;(5)黑光灯诱蛾。各方法互相验证,取长补短。(二)

Leopard moth(Zeuzara multistrigata)is a primary pest damaging the trunks of Casuarina equisetifelia along coastal regions of Fujian province. The biological characters of this insect are studied in this paper. Close relations are found between its occurence and ecological factors. Damage on tree trunks is heavy in forest, in which, there is an abundant sunlight or the shade density below 0.7. Forests over 7 years in age are almost undamaged by the insect. The damage is lighter in mixed forests than in pure ones. Soil improvement and basal fertilizer application can increase the defensive ability of trees to the insect. When there are rich ground vegetation and large amount of natural enemies, the rampancy of leopard moth can easily be controlled. Sanitation culting can also reduce the sources of the insect.