• 中国中文核心期刊
  • 中国科学引文数据库(CSCD)核心库来源期刊
  • 中国科技论文统计源期刊(CJCR)
  • 第二届国家期刊奖提名奖

Citation:

THE STUDY ON GROWING LOSS ASSESSMENT OF YOUNG POPLAR CAUSED BY DOTHIORELLA GREGARIA

  • Received Date: 1990-01-24
  • According to the investigation of single tree, the study on assessment of growing loss of young poplars caused by Dothiorella gregaria was carried out. The proportion of area (X5) between disease spots and bark of tree under breast diameter was independent variable; the growth data of breast diameter (Y2) in a year were dependent variable. (X6) and (Y2) of the three species were studied by regression analysis.1.P. pyramidalis×559:Y2=-0.15406+118.52194/(102.9113+X52)2.P. canadensis: Y2=-0.4136+278.32113/(133.0115+X52)3.P. simonii×nigra: Y2=-0.08487+110.16972/(131.4548+X52)It is believed that the three holistic models are useful in grading and loss assessment of the disease.
  • 加载中
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article views(2862) PDF downloads(863) Cited by()

Proportional views

THE STUDY ON GROWING LOSS ASSESSMENT OF YOUNG POPLAR CAUSED BY DOTHIORELLA GREGARIA

  • 1. The Research Institute of Forestry CAF
  • 2. Forest Research Institute of Tie Ling City
  • 3. The Research Institute of Fcrcst Resource Information Technique CAF

Abstract: According to the investigation of single tree, the study on assessment of growing loss of young poplars caused by Dothiorella gregaria was carried out. The proportion of area (X5) between disease spots and bark of tree under breast diameter was independent variable; the growth data of breast diameter (Y2) in a year were dependent variable. (X6) and (Y2) of the three species were studied by regression analysis.1.P. pyramidalis×559:Y2=-0.15406+118.52194/(102.9113+X52)2.P. canadensis: Y2=-0.4136+278.32113/(133.0115+X52)3.P. simonii×nigra: Y2=-0.08487+110.16972/(131.4548+X52)It is believed that the three holistic models are useful in grading and loss assessment of the disease.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return