论文部分内容阅读
【目的】进一步揭示不同种源樟子松在帽儿山地区的生长差异性,选择出优良种源。【方法】以1981年采种、1982年育苗、1984年春造林到帽儿山地区的高峰、图强、卡伦山、红花尔基、罕达盖、金山、阿尔山等7个种源31年生樟子松试验林为研究对象,通过对樟子松胸径、树高、材积、冠幅、年轮宽度及保存率等6个生长性状进行方差分析、多重比较、相关性分析、主成分分析等,选择优良种源。【结果】种源间胸径达到极显著差异(P<001),材积和冠幅达到显著差异(P<005),树高没有显著差异(P>005);区组间各性状均没有显著差异(P>005)。图强种源的年轮宽度最大(369 mm),保存率则最小(5667%);不同种源胸径、树高、材积、冠幅及年轮宽度与原产地地理气候因子之间没有显著相关性。樟子松种源各性状地理变异模式不明显,而保存率与纬度呈极显著负相关(P<001),与经度呈显著负相关(P<005),与海拔呈显著正相关(P<005);主成分分析结果发现,图强种源综合指数得分最高(2972)。【结论】31年生樟子松人工林生长性状不同种源之间存在差异,红花尔基、高峰种源生长较好;图强种源表现最好,应用潜力大。
【Objective】 The purpose of this study is to further reveal the differences in growth of Pinus sylvestris var. Mongolica in Maoershan region and to select superior provenances. 【Method】 The 31-year-old germplasm of seven provenances was planted in 1981, raised in 1982 and reared in the spring of 1984 in the peak of Maoershan, Tuqiang, Karon, Honghuaerji, Qaedaigou, Jinshan and Aershan The Pinus sylvestris var.mongolica test forest was selected as the research object and the variance analysis, multiple comparison, correlation analysis, principal component analysis, etc. were conducted on 6 growth traits of Pinus sylvestris var. Mongolica, such as DBH, height, volume, crown width, , Choose good provenance. 【Result】 The results showed that there was a significant difference in DBH between provenances (P <001), significant difference in volume and crown (P <005), no significant difference in tree height (P> 005) (P> 005). There was no significant correlation between the DBH, tree height, volume, crown width and annual ring width of geographically provenance sources and the geographical climatic factors of the provenance (369 mm) and the lowest conservation rate (5667%) Sex. There was no obvious pattern of geographical variation in the provenances of Pinus sylvestris var. Mongolica, but there was a significant negative correlation between the preservation rate and latitude (P <001) and negative correlation with longitude (P <005) 005). According to the principal component analysis, the strong index of comprehensive provenance of Tuqiang scored the highest (2972). 【Conclusion】 The growth characteristics of 31-year-old Pinus sylvestris var. Mongolica plantations differed from one provenance to the other, with the provenances of Honghuaerji and peak provenance growing well.