井冈山大学学报（自然科学版）2026，Vol.47Issue(2)：62-70,9.DOI:10.3969/j.issn.1674-8085.2026.02.008
光强对入侵植物大狼耙草及其伴生种山莴苣生长特性的影响
Effects of light intensity on the growth characteristics of invasive plant Bidens frondosa L.and its companion Lactuca indica L.
摘要
Abstract
Taking the invasive plant Bidens frondosa L.and its companion species Lactuca indica L.as test materials,the differences of plant morphology and biomass accumulation and allocation characteristics of the two plants under different light intensities(14%-100%)were investigated.Combined with plasticity index evaluation,the adaptability of B.frondosa to light intensity was discussed.The results showed that under low light conditions,the plant height,crown width,crown area,total biomass,leaf area ratio,leaf root ratio,stem biomass ratio,root biomass ratio and leaf weight fraction of B.frondosa and L.indica were higher than those under full light.Combined with the analysis of plasticity index,it was found that B.frondosa showed stronger phenotypic plasticity in crown width,crown area,leaf area and other indicators,while L.indica had more advantages in plant height and total biomass.Therefore,moderate shading is beneficial to the growth and biomass accumulation of B.frondosa.B.frondosaand L.indicaboth have strong adaptability to light intensity,but the strategies are different.关键词
大狼耙草/入侵/光照强度/生物量分配/适应性Key words
Bidens frondosa L./invasion/light intensity/biomass allocation/adaptability分类
农业科技引用本文复制引用
肖海艳,王一冰,廖炟,孙誉菡,闫小红,周兵..光强对入侵植物大狼耙草及其伴生种山莴苣生长特性的影响[J].井冈山大学学报（自然科学版）,2026,47(2):62-70,9.基金项目
国家自然科学基金项目(31760122) （31760122）
江西省自然科学基金项目(20212BAB205018) （20212BAB205018）
江西省教育厅科技计划项目(GJJ211013) （GJJ211013）
井冈山大学博士科研启动项目(JZB1814) （JZB1814）
