摘要
通过1984～1986年对越冬幼虫的系统调查数据,分别求得油松毛虫越冬幼虫上树历期约为51d;下树历期约为87d;上树高峰期为每年的3月28日～4月19日;下树高峰期为每年的10月份。并同时对越冬幼虫上树过程中的物候学进行了观察。
By systematic investigation from 1984 to 1986,we have obtained results in the following parameters: (1) the period up through the tree is about 51 days; (2) the period down through the tree is about 87 days; (3) the peak period up through the tree is from Mar. 28 to Apr. 19 in every year; (4) the peak period down through the tree is Oct. in every year.The results of the study have provided a reliable basis for forecasting the occurrence period and controlling the hibernating larval.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
1991年第2期26-30,共5页
Journal of Beijing Forestry University
基金
"六五"国家科技攻关课题"油(赤)松毛虫综合防治技术的研究"
关键词
油松
松毛虫
越冬
幼虫
预测
Chinese pine caterpillar, hibernating larval,period up through the tree, period down through the tree, peak period up through the tree, peak period down through the tree, phenology
