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广西钦卅市三十六曲林场,地处钦卅地区中部偏北、该场钦州片林区,有林面积4万多亩,以马尾松为主的人工林,营造于六十年代后期,马尾松生长一般,马尾松毛虫每年发生3—4代。七十年代以来,每2—3年发生一次,是典型的常灾区。历年来封山林区有虫不易成灾,不封山林区由于群众进山割草、打枝,砍伐杂灌木,林木稀疏,植被少,森林生态结构简单,马尾松毛虫发
The 36 forest farm in Qinlian City of Guangxi Province is located in the northeast of the central Qinqin region. The forest area of Qinzhou, a forested area with more than 40,000 mu of forest area and dominated by masson pine, was built in the late 1960s. Masson pine growth in general, Masson pine caterpillars occur 3-4 generations a year. Since the seventies, every 2-3 years once, is a typical disaster area. Over the years closure of the forest is not easy to lead a disaster, not closed forest as the masses into the mountains mowing, twigs, cutting shrubs, sparse trees, less vegetation, the forest ecological structure is simple,