亚热带植物科学2024，Vol.53Issue(5)：451-458,8.DOI:10.3969/j.issn.1009-7791.2024.05.008
毛竹林和雷竹林根系结构特征研究
Root Structure Characteristics of Phyllostachys edulis Forests and P.praecox Forests
摘要
Abstract
The study of differences in root structure characteristics between Phyllostachys edulis and P.praecox forests through measurements of length,volume,surface area,and dry weight of the root was carried out,which provided a basis for bamboo resource cultivation,soil management and enhancing the economic benefits of bamboo forests.The soil distribution characteristics of bamboo forest roots were investigated by using the methods of root digging scanning.P.edulis roots mainly distributed in the soil layer of 0-40 cm,and the root surface area,volume,length and dry mass accounted for more than 80%of the total root system.The proportions of root length and volume of different diameter classes in P.edulis and P.praecox forests showed the decreasing trend with the deepening of the soil layer.In the different diameter classes of P.edulis roots,roots with diameters＜1 mm had the highest proportion of length(70.45%),whereas those with diameters＞2 mm had the highest proportion of volume(78.73%).In P.praecox forest,the roots were distributed only in the soil layer of 0-40 cm,and the root volume,surface area,and dry weight accounted for more than 60%in the surface soil layer(0-20 cm).The root length accounted for 59.39%of the total length,and roots with diameters＜1 mm had the highest proportion of length(80.46%)among different diameter classes,though they had the smallest proportion of volume(16.63%).In the soil layer of 0-40 cm,the proportion of root length in three diameter classes showed that P.praecox forest was greater than P.edulis forest.The proportion of roots with diameters≤2 mm showed that P.edulis forest was less than P.praecox forest.The proportion of roots with diameters＞2 mm in P.edulis forest was greater than P.praecox forest.The soil layer of 0-40 cm is the main active layer for the growth of bamboo forest roots,and it is also the important level for soil management in bamboo forests.P.edulis and P.praecox differ significantly in root content and structure.P.edulis has the larger root structure compared to P.praecox.Therefore,it is necessary to propose measures that are more suitable for bamboo management by combining different root structure characteristics.关键词
毛竹/雷竹/根系/根系结构Key words
Phyllostachys edulis/Phyllostachys praecox/root/root structure分类
农业科技引用本文复制引用
吕惠飞,王灵玲,赵紫晴,孙晗靖,郑慧..毛竹林和雷竹林根系结构特征研究[J].亚热带植物科学,2024,53(5):451-458,8.基金项目
浙江省科学技术厅领雁计划项目(2023C02035) （2023C02035）
国家自然科学基金项目(31670607、30840064) （31670607、30840064）
