为了加速我们林业良种工作的发展,争取尽快解决本县湿地松种子自给,促进林业生产大上快上,我们于1974年开始筹建湿地松种子园。采用营养杯苗定植砧木20亩,株行距5×5尺。1976年2月底从红岭种子园取回已开花结实的优良母树接穗,于3月4日至9日采用髓心形成层对 In order to speed up the development of our forestry thoroughbred work and strive to solve the problem of self-sufficiency in the seed of the slash pine in this county and promote the rapid development of forestry production, we started to build the wetland pine seed orchard in 1974. The use of nutrition cup seedlings planted 20 acres of stock, spacing 5 × 5 feet. At the end of February 1976, the scion of elite mother tree, which has flowering and fruiting, was taken back from Hongling Seed Park, and the pith formation layer was used from March 4 to March 9