【摘要】 在俄罗斯的西伯利亚红松优良种源区内采集7个种源的种子,并于黑龙江省大海林林业局太平沟林场育苗、帽儿山实验林场进行造林。通过对各种源的苗高(幼树高)、地径与对照红松进行方差分析表明,各性状种源间的差异达到极显著水平,7年生幼树高、地径的F值分别为12.59、4.13,各性状的遗传力均大于75%。根据幼树高、地径等性状多重比较结果,选出乌兰乌德为最佳种源,其幼树高、地径较生长量最低的后杭爱种源分别提高了44.95%、12.77%。苗高(幼树高)、地径与各个种源的地理气候因子相关性分析表明:地理纬度对地径影响较大,呈显著正相关关系,在引种的种源范围内,西伯利亚红松的地径生长量随着纬度的增加呈现增大的趋势,影响这种变异的主要气候因子是温度和水分;生长季节内,7月份的均温、相对湿度、年降水、5—8月降水等与苗高(幼树高)、地径呈现极显著或显著的正相关关系;苗高(幼树高)、地径与种源的海拔高度呈现极显著的负相关关系,西伯利亚红松这种地理变异呈现为连续的冷—暖变异模式。更多还原

【Abstract】 Seeds were collected in seven Pinus sibirica Du Tour provenances in Russia.Seedlings of P.sibirica were raised at Taipinggou State-owned Forest Farm of Dahailin Forestry Bureau in 2002,and the seedlings were planted at the Maoershan Experimental Forest Farm of Shangzhi City,Heilongjiang Province in 2006.Variance analyses of seedling height and ground diameter show that there are significant variations in growth characters of P.sibirica from different provenances.The heritabilities of all the characters are more than 75%.Multiple comparison of all the characters indicates that the Ulan-Ude is the most excellent provenance,whose height and ground diameter are 44.95% and 12.77% respectively higher than those of Arkhangai which is the worst.Latitude has a great influence on ground diameter,and there is an extremely significant positive correlation between latitude and ground diameter.For all the introduced provenances,the ground diameters of P.sibirica increase with latitude.And the main factors of this tendency are temperature and moisture,such as average temperature in July,relative humidity,annual precipitation and precipitation from May to August,which have extremely significant or significant positive correlation with height and ground diameter of P.sibirica.There are extremely significant negative correlations between height and ground diameter of P.sibirica and altitude.The geographical variation of P.sibirica is a reflection of climate changes from cold to warm.更多还原