国外松在我省已引种栽培40余年。实践表明,国外松是适合我省发展的优良树种。但近年来,我省有些地方国外松发生顶死丛枝现象。是什么原因导致国外松发生丛枝病?怎样才能进行有效的防治?看法不一。现将(本文与国外松“多头”现象的调查报告)一并发表,希望我省科技工作者,根据党的“双百”方针,进一步开展深入的研究和探讨,活跃林业界学术空气,并尽快解决国外松丛枝病(或“多头”)问题。 Foreign pine in our province has been introduced for more than 40 years. Practice shows that foreign pine is an excellent tree species suitable for the development of our province. However, in recent years, some places in our province have the phenomenon of top dead and pine branches in other places. What causes pine brouch disease abroad? How can we carry out effective prevention? Different opinions. Now, this paper will be published jointly with the survey report on the phenomenon of “long plucking” in foreign countries. We hope science and technology workers in our province will further conduct in-depth research and discussions based on the “double hundred” principle of the party, As soon as possible to solve the problem of pine (or “long”) abroad.