摘要
该文研究了红脂大小蠹 (DendroctonusvalensLeConte)的空间分布格局 ,为典型的聚集分布 ,提出成虫扬飞阶段化学防治区域 ;通过对该虫聚集机制的研究 ,明确提出虫源树概念及其外表特征 ,极大地缩小了非扬飞阶段化学防治的范围 ;通过越冬规律的研究 ,更加有针对性地提出了仅对数量极少的虫源树根部进行防治的策略 ;采用磷化铝根部土壤熏蒸防治试验 ,有效率达 90 3% .这种以生物学、生态学、行为学为依据科学合理制定的防治策略 ,能有效地减低化学防治对森林生态系统的负面影响 ,有利于油松林生态系统的稳定性以及对有害生物的生态调控 .
The paper reveals that the spatial pattern of the Dendroctonus valens LeConte is typical aggregation distribution, and then puts forward the better chemical control area in the dispersal stage of the imago. Through the study of the aggregation mechanism, the concept of insect source trees and their outward features are clearly given out, which will greatly reduce the control scope in the dispersal stage. Based on the investigation of the over wintering pattern, the control tactics that only control the roots of several insect source trees is presented. Using the aluminium phosphide to fumigate the roots of the infested trees, the effective ratio was 90 3 percent. The control tactics that developed according to the insects biology, ecology and ethology can reduce effectively the negative influence of the chemical control to the forest ecosystem, and being beneficial to the pine forest ecosystem and the ecological control of the harmful living things.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2003年第3期37-41,共5页
Journal of Beijing Forestry University
基金
北京市自然科学基金资助项目 ( 60 0 2 0 12 )
关键词
红脂大小蠹
化学防治
虫源树
聚集机制
空间分布格局
Dendroctonus valens LeConte, chemical control, insect source tree, aggregation mechanism, spatial pattern
