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以二白杨、新疆杨为研究对象,选择优势木通过树干解析,研究了树高、胸径、材积生长特性,以期对其栽培适宜性和定向培育做出评价。研究结果表明:在整个生长期内,二白杨、新疆杨的总生长量始终保持较快的增长,平均生长量较平稳,但是连年生长量表现出参差不齐的状况;树高连年生长量几乎全部高于胸径连年生长量,说明二白杨、新疆杨的树高的生长快于胸径的生长,生长过程中以树干的增高为主;材积生长量还未出现峰值,平均生长量和连年生长量还没有相交,还未达到数量成熟龄。二白杨伐龄期可在20a以内,新疆杨的伐龄期应在15a以内,可收到较好的经济效果。
The poplar and Xinjiang poplar were selected as the research object, and the dominant tree was selected to analyze the tree height. The tree height, DBH and volume growth characteristics were studied in order to evaluate its suitability and orientation. The results showed that during the whole growth period, the total growth of Populus tomentosa and Populus davidiana kept a relatively fast growth and the average growth was stable, but the annual growth showed uneven condition. All above the DBH annual growth, indicating Populus, Xinjiang poplar height growth faster than the DBH growth, the growth process mainly to trunk height; volume growth has not yet appeared peak, the average growth and annual growth Have not crossed, have not yet reached the number of mature age. The poplar age can be less than 20a, Xinjiang’s cutting age should be less than 15a, can receive better economic results.