摘要
对德清真片胸叶蜂食叶量与危害叶量、一般毛竹林分株均叶面积、竹林受害后对新生竹的影响、现今采用的防治手段所需费用等方面进行测定与调查，依此确定了德清真片胸叶蜂的防治指标。
Through meaaurement of the leaf quantity damaged by Eutomostethus deqingcnsis and the leaf area of Phgllostachgs pubecens stand in Deqing County,Zhejiang Province,and measurement of culm quantity on the sample plots damaged by E.deqingcnsis and calculation of the controiling costs and value of the young culms on the sample plots,the economic thresholds for the larvae were ascertained.
出处
《浙江林学院学报》
CSCD
1995年第3期271-275,共5页
Journal of Zhejiang Forestry College
关键词
德清真片胸叶蜂
害虫调查
病情指数
防治
Eutomostethus deqingensis
pest-insect survey
disease indexes
