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林业科学 ›› 1995, Vol. 31 ›› Issue (6): 559-564.

• 研究简报 • 上一篇    下一篇

马尾松毛虫二、三代分化规律的初步研究*

王常禄1,江国华2,何庆全3,陈雁4   

  1. 1. 中国林业科学研究院森林保护研究所 北京 100091
    2. 浙江省龙游县森防站 龙游县 324400
    3. 浙江省常山县森防站 常山县 324200
    4. 浙江省自衢县森防站 衢县 324000
  • 收稿日期:1994-04-25 出版日期:1995-11-25 发布日期:1995-11-25

A STUDY ON THE GENERATION DIFFERENTIATION OF PINE CATERPILLAR-DENDROLIMUS PUNCTATUS(LEPIDOPTERA: LASIOCAMPIDAE)

Changlu Wang1,Guohua jiang2,Qingquan He3,Yan Chen4   

  1. 1. The Research Institute of Porest Protection, CAF Beijing 100091
    2. The Forest Disease and Pest Control Station of Longyou County, Zhejiang Province Longyou 324400
    3. The Forest Disease and Pest Control Station of Changshan County, Zhejiang Province Changshan 324200
    4. The Forest Disease and Pest Control Station of Qu County, Zhejiang Province Quxian 324000
  • Received:1994-04-25 Online:1995-11-25 Published:1995-11-25

关键词: 马尾松毛虫, 世代分化

Abstract:

The relationships between the differentiation ratio of the third generation of the pine caterpillar Dendrolimus punctatus Walker and the environment, climate, population density and the development of the larvae were studied in this paper. The population density and peak day of hatching were proved to be the key factors influencing the ratio of the third generation. The ratio of the third generation in stands with high population density or early peak day of hatching will be higher than that with low density or late peak day of hatching. It will be significantly low when the needle loss exceeds 70% of the needles in a tree. There is not significant relationships between the ratio of the third generation and the ground vegetation, forest canopy and sides of low slope sides(< 20°). The ratio of the third generation in a region is relatively stable in a given. Area in different years, while in different regions, it may change greatly according to the meteorological factors. A predication figure was established according to the peak hatching day of the second generation.

Key words: Dendrolimus punctatus, Generation differentiation