摘要
经1994～1998年林间样地调查和饲养观测,研究了云杉球果小卷蛾在祁连山北坡林区的成虫羽化进度、孵化进度、雌雄性比及各虫态的死亡率;依据有效基数预测法,得到发生量预测式;根据对害虫不同发育时期林间植物物候期的观察,对其发生期进行了物候预测。
Cydia strobilella is investigated at wood and observed with feeding during 1994～1998. Imago eclosion rhythm, egg hatching rhythm, and mortality of cach stage of Cydia strobilella in north hill of Qilian Mountain were found. Base on estimate method of valid cardinal number, the occurrence predict formula was obtained. At the same time, according to the observation on phenology of pest in different stage in wood, forecast was made on the outbreak of the pest.
出处
《西北林学院学报》
CSCD
北大核心
2003年第2期55-57,共3页
Journal of Northwest Forestry University
基金
甘肃省科技攻关项目(GK 2 48A)
