| 毛白杨光合作用与土壤水分间关系的研究 |
| |
| 引用本文： | 王文全,寇纪烈,张振江. 毛白杨光合作用与土壤水分间关系的研究[J]. 河北林果研究, 1993, 0(3) |
| |
| 作者姓名： | 王文全 寇纪烈 张振江 |
| |
| 作者单位： | 河北林学院林学系(王文全)，北京林业大学(寇纪烈)，大名县国营卫东林场(张振江) |
| |
| 摘 要： | 对不同土壤水分条件下生长的3～4 a生毛白杨幼林根系分布层土壤水分的动态监测和叶片光合作用的定期测定表明,毛白杨幼树光合作用速率与土壤水分呈正相关;净光合速率随土壤水分变化的轨迹呈S形曲线。在田间持水量40％～60％范围内,光合速率因水分下降而急剧降低,光合作用速率的日变化也与土壤水分含量有关,持续干旱对光合作用影响更大。
|
| 关 键 词： | 土壤水分 光合速率 毛白杨 |
STUDIES ON THE RELATION BETWEEN SOIL MCISTURE AND PNOTOSYNTHESIS OF POPULUS TOMENTOSA |
| |
| Wang Wenquan. STUDIES ON THE RELATION BETWEEN SOIL MCISTURE AND PNOTOSYNTHESIS OF POPULUS TOMENTOSA[J]. Hebei Journal of Forestry and Orchard Research, 1993, 0(3) |
| |
| Authors: | Wang Wenquan |
| |
| Abstract: | According to the periodical determination of soil moisture dynamics and photosynthesis in 3~4 year - old plantation of Populus tomentosa under different water stress ,the photosynthetic rate of young trees was positively correlated with soil moisture. And net pho-tosynthetic rate varied with soil moisture,as a signoid curve. In the range of 40%~60% of field moisture, photosynthetic rate decreased rapidly with the decreasing of soil moisture. Moreover,the daily variation of photosynthetic rate was also related to soil moisture. And long period drought affected photosynthesis significantly. |
| |
| Keywords: | soil moisture photosynthesis Populus tamentosa |
| 本文献已被 CNKI 等数据库收录！ |
|
