扬州大学学报（农业与生命科学版）2025，Vol.46Issue(3)：28-36,9.DOI:10.16872/j.cnki.1671-4652.2025.03.004
不同平茬处理对沙柳叶光合及细根动态形态性状的影响
Effects of different stumping treatments on leaf photosynthesis and fine root dynamic morphological traits of Salix psammophila
摘要
Abstract
The leaf photosynthesis and fine root dynamic morphology of Salix psammophila in different stumping treatments(0,10,15,20 cm of stubble heights)in western Ordos area of Inner Mongolia were quantitatively studied.The Salix psammophila plantation with basically the same site and stand conditions and in the recession period was se-lected as the research object.The net photosynthetic rate,transpiration rate,water use efficiency and fine root dynamic morphology were explored,and the optimal stumping treatments was selected by comprehensive analysis of membership function.The results showed that:The net photosynthetic rate,transpiration rate and water use efficiency of Salix psammophila reached the highest in August under different stubble heights.The net photosynthetic rate,transpiration rate and water use efficiency of Salix psammophila in August were the best at 0 cm stubble heigh.The root length densi-ty,growth rate,death rate,and the ratio of life to death of Salix psammophila under different flat stubble treatments were all in the order of 0 cm of stubble heights＞15 cm of stubble heights＞10 cm of stubble heights＞20 cm of stubble heights＞non-flat stubble,and it performed best from August to September.Through the analysis of membership func-tion,the treatment of 0 cm of stubble heights was relatively good,indicating that Salix psammophila in the western Or-dos area should be treated with 0 cm flat stubble height to increase its growth rate.关键词
沙柳/平茬/光合速率/细根Key words
Salix psammophila/stumping/photosynthetic rate/fine root分类
农业科技引用本文复制引用
张志强,苗恒录,郭月峰,祁伟..不同平茬处理对沙柳叶光合及细根动态形态性状的影响[J].扬州大学学报（农业与生命科学版）,2025,46(3):28-36,9.基金项目
内蒙古自然科学基金资助项目(2022MS03029) （2022MS03029）
内蒙古自治区直属高校基本科研业务费项目(BR22-15-01) （BR22-15-01）
内蒙古自治区科技重大专项(2024JBGS0023-3) （2024JBGS0023-3）
