马尾松毛虫防治关键期与防治历

Key Control Time and Prevention Calendar of Dendrolimus punctatus

本文分析了马尾松毛虫（Dendrolimus punctatus Walker）防治关键期,发现马尾松毛虫种群密度快速增长期在增殖期末期,在增殖期末期开展有效的防治,可以预防马尾松毛虫暴发成灾,并依据这一原理编制了马尾松毛虫防治月历和防治周期历。

In this paper,analysis is made of the key control time of Dendrolimus punctatus Walker.It is found that the fast-growing increment phase of the population density of Dendrolimus punctatus occurrs at the end of its proliferation period.Therefore,at the end the proliferation period,implementing effective prevention and treatment can prevent the outbreak of Dendrolimus punctatus,and according to the principle,a prevention calendar and a prevention cycle calendar have been prepared.