摘要
银杏大蚕蛾 Dictyoploca japonica Moore在胡桃楸 Juglans mandshurica树干上的产卵量与林龄、胸径及树皮开裂程度成正比 ,而与树高成反比 ;山的北坡、西坡、山下腹较东坡、南坡、山的中上腹产卵量高 ,树干的北面和西面的产卵量高于南面和东面。
The oviposition amount of Dictyoploca japonica on Juglans mandshurica trunk is positively related with the age of stands,breast diameter and the degree of bark crack and negatively related with the height of trees.The females lay more eggs on the nor thern and western mountain slopes than on the southern and eastern slopes.Also there are more eggs on the northern and western parts of the trunks than on the southern and eastern parts.
出处
《森林病虫通讯》
北大核心
2000年第1期37-38,共2页
Forest Pest and Disease
