摘要
马尾松吉松叶蜂(Gilpinia massoniana Xiao)发生于安徽省滁县长冲林场,主要危害20～30年生马尾松纯林,疏林、林缘受害严重。1991年5月调查,发生面积达9000亩。一年发生两代,6月中旬至7月上旬,10月下旬至11月中旬老熟幼虫在枯枝落叶层下、草丛根部、土壤中结茧,以预蛹越夏、越冬。幼虫共6龄,1～5龄食叶量平均573.1 cm,第6龄不取食,经5～48 h结茧。一、二代幼虫危害期分别在5月上旬至7月上旬和9月中旬至11月中旬。幼虫雌性比0.5。雌成虫交尾后将卵散产于松针中,产卵量平均87.6粒。
Gitpinia massoniana is a new forest pest occurred in Changchong Forest Farm of Chu County, Anhui Province, whose major host is Pinus massoniana. According to the survey conducted in May, 1991, the area infested by the pest was about 9000mu. It has 2 generations a year. It pupates under the litter, in the root part of the grass or in the soil from mid-June to early July and from late October to mid-November, and aestivatea and hibernates by prepupa. The larva has 6 instars, feeding on an average of 573.1 cm of the needle during the period of lst^5th instar. After entering into the 6th instar, the larva feeds on nothing and makes cocoon in 5 hours to 2 days. The sex ratio of the adults is 1:1. After mating, the female lays eggs on the needles, the average number of an egg mass is 87.6. It mainly distributes in the pure P. massoniana forest of 20~30 years old, especially in the sparse forest and forest border. The pest can be effectively controlled by 10% Fenvalerate or 10% Mevinphos.
出处
《林业科学研究》
CSCD
北大核心
1992年第2期196-202,共7页
Forest Research
关键词
马尾松
吉松叶蜂
防治
Gilpinia massoniana
life cycle
control
