【摘要】 通过对帽儿山试验林场胡桃楸种源试验幼树资料的研究表明:胡桃楸的生长性状,适应性状和形态性状分别与经度、纬度呈显著负相关,表现出以经向变异为主,纬向变异为辅,经纬双向渐变的趋势。同时为帽儿山及毗邻地区造林用种初步选出了最佳种源。更多还原

【Abstract】 The analysis of the data from young Juglans mandshurica plantations on the Maoershan Experimental Forest Farm indicates that variations in growth, adaptional and morphological traits are negatively correlated with longitude and latitude strongly. It is a dual cline rely mainly on longitude. The best provenances have been determined for the reforestation of Maoershan and its neighbouring regions.更多还原