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首页> 外文期刊>Weed Biology and Management >Evaluation of the allelopathic activity of five Oxalidaceae cover plants and the demonstration of potent weed suppression by Oxalis species
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Evaluation of the allelopathic activity of five Oxalidaceae cover plants and the demonstration of potent weed suppression by Oxalis species

机译：评价五种草Ox科植物的化感活性，并证明草alis抑制强效杂草

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Laboratory and field experiments were conducted to evaluate the usefulness of Oxalis spp. as allelopathic ground-cover plants for weed management. Some Oxalis spp. have previously been reported to possess strong allelopathic activities but few studieshave been conducted on their activities in fields. This study aimed to investigate allelopathic activities and the possibility of weed suppression in five species of common Oxalis: shamrock oxalis (Oxalis articulata Sav-igny), Bowie's woodsorrel (Oxalisbowiei Lindl.), trefoil (Oxalis brasiliensis Lodd. ex Knowl. et West.), lucky clover (Oxalis deppei Lodd. ex Sweet) and Oxalis hirta L. The effects of the leachates from dry leaves and the exudates from living roots of these plant species were tested inlaboratory experiments. The leachates from O. articulata, O. bowiei, O. deppei and O. hirta and the exudates from O. deppei caused >84% inhibition of the radicle elongation of lettuce seedlings, but no effect was observed on the seed germination of lettuce. In the field experiment, O. deppei significantly reduced the weed population in July. A significant relationship was observed between the weed population and the percentage ground coverage of Oxalis spp. In contrast to the weed population, a significant relationship was observed between the weed above-ground biomass and the allelopathic activity of exudates from Oxalis spp.
机译：进行了实验室和现场实验，以评估草酸Ox的有用性。作为用于杂草治理的化感地被植物。一些草alis以前据报道具有很强的化感作用，但对其野外活动的研究很少。这项研究旨在调查五种常见草酸的化感作用和抑制杂草的可能性：三叶草草（Oxalis articulata Sav-igny），鲍伊的s浆草（Oxalisbowiei Lindl。），三叶草（Oxalis brasiliensis Lodd。ex Knowl.et West。 ），幸运三叶草（Oxalis deppei Lodd。ex Sweet）和Oxalis hirtaL。在实验室实验中测试了这些植物物种的干叶浸出液和活根的渗出液的作用。来自O. articulata，O。bowiei，O。deppei和O. hirta的浸出液和来自O. deppei的渗出液对莴苣幼苗的胚根伸长产生了> 84％的抑制作用，但未观察到对莴苣种子发芽的影响。在田间试验中，七月O. deppei显着减少了杂草种群。杂草种群与草alis的地面覆盖率之间存在显着的关系。与杂草种群相比，地上杂草与草Ox草分泌物的化感活性之间存在显着的关系。

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