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云南杂毛虫生物学特性和林间消长规律
CHARACTERISTICS OF CYCLOPHRAGMA LATIPENNIS WALKER AND ITS FLUCTUATION IN FOREST
【摘要】 云南杂毛虫是红锥的主要害虫,为广东新发现虫种,其生物学特性国内尚未报导。该虫每年发生1代,11月下旬以卵在树皮内越冬,2月中旬幼虫孵化,9月中旬结茧,11月下旬羽化。幼虫7龄,昼伏夜出,林间卵和低龄幼虫生存率低,老熟林和林缘木易受害。
【Abstract】 Cyclophragrna laiipennis is a newly found pest in Guangdong. It is the major pest harmful to Castanopsis hystrir. It produces one generation a year, lives through the winter as eggs in the bark. It hatches at the middle of the coming February, becomes cocoons at the middle of September and emerges at the late November. The larvae have 7 ages and is active just at night. Survival rate of both eggs and low aged larva are low in nature forest situation. Mature forest and trees at the edge are easy to be damaged by Cyclophragma latipennis.
【关键词】 红锥;
云南杂毛虫;
生物学特性;
【Key words】 Castanopsis hystrix; Cyclophragma latipennis Walker; characteristics;
【Key words】 Castanopsis hystrix; Cyclophragma latipennis Walker; characteristics;
- 【文献出处】 广东林业科技 ,Forestry Science and Technology , 编辑部邮箱 ,2000年03期
- 【分类号】S763.301
- 【被引频次】1
- 【下载频次】39