在毛主席无产阶级革命路线的指引下,在深入开展“农业学大寨”群众运动中,遵照毛主席关于“有了优良品种,即不增加劳动力、肥料,也可获得较多的收成”的教导,我们从一九七二年开始进行杉木良种选育工作,七五年春开展了较大规模的杉木优树普查,目前,全区已选留杉木优良单株402株,疏伐改造母树林568亩,嫁接种子园263亩,实生种子园480亩,定栽砧木110亩,嫁接采穗圃47亩、334个无性系、4750根接穗。同时,还进行了 Under the guidance of Chairman Mao’s proletarian revolutionary line, in carrying out the mass movement of “learning from agriculture in Dazhai”, we must follow Chairman Mao’s statement that “with excellent varieties, that is, more crops can be obtained without increasing labor force and fertilizer” Teach us that we started the breeding of Chinese fir seed in 1972 and we conducted a large-scale survey of the excellent Chinese fir tree in the spring of 1975. At present, we have selected 402 excellent single plantation Chinese fir (Cunninghamia lanceolata) 568 mu, 263 mu of grafted seed orchard, 480 mu of live seed orchard, 110 mu of planted rootstock, 47 mu of grafted nursery, 334 clones and 4750 scion. At the same time, also carried out