论文部分内容阅读
本项目的试材为辽宁省草河口的种子,在泰山三岔苗圃育苗,分别在泰山的上、中、下部营造试验林、总面积892宙。经30年引种试验证明,樟子松在泰山生长发育正常。树高年平均生长量0.24～0.27M,胸径年平均生长最0.41～0.45cm,干形圆满通直。19年生开始结实,对试验区发生的林木病虫害(松扁叶蜂、油松巢蛾、松干枯病等)及自然灾害(大风、雪折、低温、干旱)抗性较强。
The test material for this project is the seed of the Caohekou in Liaoning Province. Seedlings were raised in the Sancha nursery of Taishan, with the total area of 892 hectares being respectively set at the upper, middle and lower parts of Mount Tai. After 30 years of introduction test proved that Pinus sylvestris growth and development in Taishan normal. The average annual growth of trees 0.24 ~ 0.27M, the average annual growth of the most diameter 0.41 ~ 0.45cm, stem-shaped successfully straight. The 19-year-old began to bear fruit. It was more resistant to forest pests and diseases (Solenopsis hystrix, Pinus tabulaeformis, pine dry blight, etc.) and natural disasters (gale, snow break, low temperature and drought) in the experimental area.