JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2014, Vol. 49 ›› Issue (07): 1-6.doi: 10.6040/j.issn.1671-9352.0.2014.131

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Effect of plants spacing on growth and photosynthetic of poplar plantations

QIN Zhu-nan1, SUN Chao1, HAN YI1, CAO Bang-hua1, MA Yong-sheng3, JIA Bo2   

  1. 1. Key Laboratory of Agricultural Ecology and Environment of Shandong Agricultural University, Taian 271000, Shandong, China;
    2. Science and Technology Department of Shandong Agricultural University, Taian 271018, Shandong, China;
    3. Forestry Bureau of Juancheng, Heze 274600, Shandong, China
  • Received:2014-04-01 Online:2014-07-20 Published:2014-09-15

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Abstract: 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.

Key words: plant-row spacings, poplar, photosynthetic characteristic, growth characteristic

CLC Number: 

  • S792.11
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