江西农业学报2024，Vol.36Issue(6)：1-6,6.DOI:10.19386/j.cnki.jxnyxb.2024.06.001
土壤养分异质性入侵植物节节麦种内竞争的影响
Effects of Soil Nutrient Heterogeneity on Intraspecific Competition in Invasive Plant Aegilops tauschii
摘要
Abstract
Soil heterogeneity is common in natural habitats,and is considered to play an important role in promoting plant invasion success.A pot experiments was therefore conducted to study the response of the invasive plant A.tauschii to the spatial heterogeneity of soil nutrients under different plant densities(1,2,4 and 8 plants/pot)with a constant amount of soil nutrients.The results showed that:(1)Soil nutrient heterogeneity has a positive effect on the growth of A.tauschii in general according to the changes of morphology and biomass indicators,but did not reach a significant level,which may be related to the size of soil patches in the experiment.(2)A.tauschii can adapt to heterogeneous soil environments by increasing root biomass input and reducing root to shoot ratio.(3)Based on the relative competition intensity(RCI)and natural logarithm response ratio(ln RR),there is no interactive effect of nutrient heterogeneity and plant density,and the effect of heterogeneity on intraspecific competition of A.tauschii is small.关键词
土壤养分异质性/入侵植物/节节麦/杂草/竞争Key words
Soil nutrient heterogeneity/Invasive plant/Aegilops tauschii/Weed/Competition分类
农业科技引用本文复制引用
袁美丽,齐远平,刘畅,王宁..土壤养分异质性入侵植物节节麦种内竞争的影响[J].江西农业学报,2024,36(6):1-6,6.基金项目
河南省自然科学基金项目(182300410092) （182300410092）
河南省洛阳市公益性行业科研专项(2202022A). （2202022A）
