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对太行山区飞播油松幼林内的油松毛虫的发生规律及其防治进行初步研究。研究结果表明,油松毛虫在太行山区油松飞播林内1年发生1代,以4—5龄幼虫在树下越冬,翌年3月下旬开始上树危害。其越冬死亡率平均为11.42％。幼虫的空间分布为负二项分布。其防治采用开林道进行化学防治是目前最有效的方法。
Preliminary study on the occurrence and control of Pinus tabulaeformis in young forest of Taihang Mountains. The results showed that the pine caterpillars occurred one year in aerial seeding of Pinus tabulaeformis in the Taihang Mountains. The larvae aged 4-5 were overwintered under the trees and the tree damage was started in late March of the following year. The overwintering mortality rate averaged 11.42%. The spatial distribution of larvae is negative binomial distribution. The prevention and treatment of open forest Road chemical control is the most effective way.