株行距配置对杨树生长及光合特性的影响  

Effect of plants spacing on growth and photosynthetic of poplar plantations

作　　者：秦柱南[1] 孙超[1] 韩义[1] 曹帮华[1] 马永升 贾波[3] 

机构地区：[1]山东农业大学农业生态与环境重点实验室,山东泰安271018 [2]鄄城县林业局,山东菏泽274600 [3]山东农业大学科技处,山东泰安271018

出　　处：《山东大学学报（理学版）》2014年第7期1-6,共6页Journal of Shandong University(Natural Science)

基　　金：国家林业公益性行业科研专项基金资助项目(20100400409);国家农业成果转化资金资助项目(2011GB2C600024)

摘　　要：以山东省重点推广的L35、I-107、W-141、中菏1号4个杨树无性系为材料,对密度(417株/hm2)相近的3种不同株行距配置方式(株距×行距:3 m×8 m、4 m×6 m、5 m×5 m)杨树的生长及光合特性进行了研究。研究结果表明:不同配置的杨树树高和冠幅差异不显著,5 m×5 m配置杨树的胸径、胸高形数、单株材积要明显大于其他两种配置,3 m×8 m配置杨树的最小;5 m×5 m配置各断面的离心率要小于其他配置,3 m×8 m配置杨树最大。株行距差值越小,杨树的光合速率、蒸腾速率、水分利用率越大。在种植密度相近的情况下,正方形株行距种植更有助于杨树充分利用空间。The effect of spacing between rows and between plants in a row on growth characteristic and photosynthetic characteristic in poplar plantations were investigated in field experiment.The experiment consisted of 3 planting patterns of 4 poplar clones（L35, I-107, W-141, zhonghe-1） under the similar plant population density （417 plant/hm2）.And the row spacing （ cm） ×plant spacing （ cm） were 3 m ×8 m, 4 m ×6 m, 5 m ×5 m respectively.The results indicated that height and crown of tree had no significant difference in different allocations.The DBH, form-factor and individual volume in 5 m ×5 m allocation were significantly more than that of in the others.Eccentricity of cross section of 5 m × 5 m allocation was less than that of others and 3 m ×8 m was the largest one.Pn, Tr and Wue of poplar were increased with the decrease of plant spacing.In the case of similar density, square planted with narrowing row spacing poplar and increasing plant spacing poplar are more conducive to make full use of space.

关 键 词：杨树 株行距配置 生长特性 光合特性 

分 类 号：S792.11[农业科学—林木遗传育种]