辽宁省引种班克松的种源选择  

Provenance Selection of Pinus banksiana Introduced from North America to Liaoning Province

作　　者：尤文忠[1] 董健[1] 陆爱君[1] 云丽丽[1] 黄国学[1] 

机构地区：[1]辽宁省林业科学研究院,沈阳110032

出　　处：《东北林业大学学报》2006年第1期9-11,共3页Journal of Northeast Forestry University

基　　金：国家"948"项目"班克松;东部白松优良造林树种引进"(98~4~06)。

摘　　要：对从北美引进的9个种源班克松所做的17a的试验结果表明:班克松是适合辽宁地区的一个优良速生树种,在各个生长时期的生长表现都要好于乡土速生针叶树种———樟子松。班克松不同种源之间的生长状况存在着较大差异,班克松各种源树高、胸径、材积生长在2年生苗期、造林后5年生、8年生、15年生时差异都达到极显著水平。2、8号种源班克松15年生时的生长表现最佳,它们的树高分别比9个种源平均高大4.8%、4.8%,胸径分别比9个种源平均胸径大8.2%、4.9%,材积分别比9个种源平均材积大21.1%、13.5%;而3、5号种源班克松15年生时的生长表现最差。班克松的树高、胸径、材积生长状况与纬度因子呈显著负相关,来自北美北纬46°附近的班克松种源是最适合辽宁地区引种的优良种源,而远离北纬46°及越向高纬度地区的班克松种源在该区表现较差。建议辽宁地区引进北美北纬46°附近的班克松种源,并建立起优良的班克松种子园。Nine provenances of Pinus banksiana were introducted from North America to Liaoning Province. Provenance test for 17 years showed that Pinus banksiana is an excellent fast-growing tree species afforested in Liaoning province, whose growth in different periods is better than that of the native tree species Pinus sylvestris var. mongolica. There were great differences among 9 provenances in growth performance, and the differences of tree height, breast diameter and volume of 2-year-old seedlings and 5, 8 , 15-year-old stands reached significant levels. The growth performance of 15-year-old trees from NO. 2 and No. 8 provenances was the best. The mean tree heights of NO. 2 and No. 8 provenances were all 4.8% higher than that of 9 provenances,and the mean breast diameters of NO. 2 and No. 8 provenances were 8.2% and 4.9% higher, the mean volumes were 21. 1% and 13.5% higher than that of 9 provenances, respectively. On the other hand, the growth performance of NO. 3 and No. 5 provenances was the worst. The growth status of height, DBH and volume of P. banksiana shows significant negative correlations with latitude. The provenances that came from latitude 46 degrees north are proved the most suitable ones and those came from higher latitude are proved the worse. It is suggested that the seed introduction of P. banksiana should come from near the area with latitude 46 degrees north and a seed orchard of P. banksiana should be established with fine provenances in Liaoning province.

关 键 词：班克松 种源 种源选择 纬度 

分 类 号：S722.7[农业科学—林木遗传育种]