化学除草开设防火线文／许庆堂１９９６年以来，北京市利用草灌净开设防火线共计１５０余万平方米，成功地阻止了十多起森林火灾的发生。化学除草开设防火线工作之前，先由区、县防火办组织专门的领导小组，组织人员对地段进行调查规划。防火线应尽量设在一级防火区及重点... Chemical weeding set fire line / Xu Qing Tang Since 1996, the Beijing Municipality to use grass irrigation net opened a total of more than 1.5 million square meters of fire, successfully blocking the occurrence of more than a dozen forest fires. Chemical weeding set fire before the work, the district and county fire prevention office to organize a special leading group, the organization of the investigation and planning of lots. Fire line should be located in a fire zone and focus on ...