密云县于去年春、雨两季播种油松3.4万亩,分布在14个公社。我局在9月份组织力量分别到西庄子、塘子、东邵渠、东田各庄、大城子、北庄、桑园、下营、冯家峪等公社进行了成活率的调查。这些公社共播种油松27,300亩。调查时采用“标准带”方法,共调查6,373亩,占播种总面积的23%。从初步调查结果看,一般成活率在60—70%,最高达90%, Miyun County in spring last year, the rain seasons sowing 34000 acres of pine, distributed in 14 communes. In September, our bureau organized an investigation into the survival rates of communes such as Xizhuangzi, Tangzi, Dongshaqu, Dongtian, Zhuang, Dachengzi, Beizhuang, Mulberry, Xiaying and Fengjiayu respectively. These communes planted 27,300 acres of Pinus tabulaeformis. Survey using “standard with ” method, a total of 6,373 acres, accounting for 23% of the total sown area. From the preliminary findings, the general survival rate of 60-70%, up to 90%