在毛主席“绿化祖国”的伟大号召下,随着林业生产的发展,松干蚧的防治工作逐步纳入了各级领导的议事日程,做了一些工作,取得了一定成绩。为了有效地控制虫害的蔓延和扩散,查清确切的边界,摸清传播蔓延规律,提出虫害的蔓延趋势,以供防治中参考,我们于今年的五月和九月,在松干蚧无肢若虫显露盛期及卵囊盛期,和省植保站一起,组织了沈阳、抚顺、本溪、丹东四个市的各有关林业单位、广大贫下中农进行了松干蚧蔓延边界和规律的调查。我们采取了专业队伍与发动群众相结合;重点线路调查与群众性普查相结合的调查 With the great call of Chairman Mao’s “greening the motherland,” with the development of forestry production, the prevention and control work of Songjian Kuwana has gradually been incorporated into the agenda of leaders at all levels. Some work has been done and certain achievements have been made. In order to effectively control the spread and spread of insect pests, ascertain the exact boundaries, find out the spreading and spread of pests, put forward the trend of spread of pests and diseases for reference in prevention and treatment, we showed that in July and September this year, Peak and oocyst, together with the Provincial Plant Protection Station, organized the relevant forestry units in Shenyang, Fushun, Benxi, Dandong four cities, the majority of poor and middle-aged peasants carried out the investigation of the spread of the rules and regulations. We have adopted a combination of professional teams and mobilized masses; a survey of key line surveys and mass censuses