[目的]比较栾树叶片浸提液对4种草坪草幼苗生长的化感作用，为栾树在园林中的合理配置提供理论和实践依据。[方法]采用盆栽试验，研究不同浓度（12．5、25．0、50．0、100．0 mg ／mL）的全缘叶栾树（Koelreuteria bipinnata Franch．var．integrifoliola（Merr．） T． Chen）叶片浸提液对高羊茅、白三叶、多年生黑麦草和剪股颖4种草坪草幼苗生长的化感作用。[结果]栾树叶片浸提液抑制剪股颖幼苗的生长，且抑制效应随浸提液浓度的升高而增强；对黑麦草呈现低浓度（≤50．0 mg ／mL）促进、高浓度（100．0 mg ／mL）抑制的双重效应；对高羊茅和白三叶没有明显化感作用。[结论]栾树叶片浸提液对4种草坪草幼苗存在不同的化感效应，与草坪草搭配种植时应优先选择黑麦草，其次是高羊茅和白三叶。%Objective] The aim was to compare the allelopathy of Koelreuteria bipinnata leaf aqueous extracts on growth of 4 kinds of turf grass, and provide theoretical and practical basis for the rational allocation of Koelreuteria bipinnata in the garden.[Method] The allelopathy effects of water extractions from Koelreuteria bipinnata leaves with different concentrations (12.5, 25.0, 50.0 and 100.0 mg /mL) on growth of 4 kinds of turf grass, Festuca arundinaces, Trifolium repens, Lolium perenne and Agrostis tenuis were studied using pot experiment.[Result] The results showed that: Koelreuteria bipinnata leaf aqueous extracts significantly inhibited the growth of Agrostis tenuis, and the inhibition effect increased with the concentration of the extracts.The leaf aqueous extracts had double effects on Lolium perenne, low concentration (less than 50 mg /mL) promote but high concentration (100 mg /mL) inhibit its growth, and there were no obvious allelopathy on Festuca arundinaces and Trifolium re-pens.[Conclusion] The leaf aqueous extracts had different allelopathic effects on 4 kinds of turf grass, so when planted with turf grass Lolium pe-renne should be firstly considered, Festuca arundinaces, Trifolium repens secondly.
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