空心莲子草浸提液对稗草和反枝苋的除草活性评价

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中图分类号：S451 文献标识码：A 文章编号：1006-060X（2025）05-0049-05

引用格式：张鑫，柏振东，李皓，等.空心莲子草浸提液对稗草和反枝苋的除草活性评价[J].湖南农业科学，2025（5）：49-53.DOI：10.16498/j.cnki.hnnykx.2025.005.010

Abstract：TisstudyamstoexplorethealelopathicefectsofAlternanteraphloxeroidesextractsonEchinochloacusalland Amaranthusetroflexus.Fourdierentpats （woleplant，leaves，stemndots）ofAlternaneraoxeroideseeetracted with three solvents （methanol，ethanol，and ethylacetate）.The herbicidal effectsof the 12 extracts on E crus-galli and A. retroflexus wereevaluatedroughteetridishfiterapermetod，soilpeemergectratment，andfoarsprayapplication.Teetrctith thestrongestherbicidaleectwasselectedforthesubsequentanalysisofactiveherbicidalsubstances.Theresultsindicatedhatthe ethanol extract from the leaves exhibited the most optimal performance. Specifically， 0.1g/mL ethanol extract from the leaves showed the inhibition ratesof 74.12% and 48.63% forthe root length and shoot length，respectively，of E crus-galli and 100% for both the root length and shoot length of A retroflexus.Liquid chromatography-mass spectrometry （LC-MS） detected acetic acid， fumaric acid，L-pyoglutaicidauriciddclencciddoiccidieact.Iosion，hdetsf A philoxeroidespossessctainhrbicidalactivitywithteetanlextractfroelavesemostratigtestrongestiibioyets on E crus-galli and A. retroflexus.

Key words：Alternantheraphiloxeroides; extract; alllopathy;Echinochloacrus-galli;Amaranthus retroflexus

空心莲子草[Alternantheraphiloxeroides（Mart.）Griseb.属苋科莲子草属，别称旱地莲子草和水花生，原产于南美洲，现广泛分布于我国多个省份[1-3]。（剩余6913字）