Abstract: To screen shade-tolerant cultivars in zoysiagrass （Zoysia spp.）， the ‘Z.matella’ and four independently selected hybrid cultivars were used as experimental materials. The shade tolerance was evaluated by comparing morphological index， dry weight， and turf quality under four artificial shading treatments （0%， 35%， 60%， 80%）. And the cultivation test was also conducted under a natural shading environment. The results showed that short-term treatment with 35% shading intensity had minimal negative effects on zoysiagrass growth. However， as shading duration and intensity increased， the relative canopy coverage and clipping dry weight of five zoysiagrasses exhibited declining trends， while turf height showed an opposite trend. After eight weeks of shading treatment， reductions were observed in the canopy dry weight， root dry weight， and rhizome dry weight to varying degrees， accompanied by a gradual decline in the turf quality. By principal component analysis and membership function methods， a comprehensive evaluation ranked the top three shade-tolerant cultivars as ‘Suzhi No.4’‘Suzhi No.3’ and ‘Suzhi No.1’. Under broad-leaved trees with the lowest shading intensity， the growth performance of these zoysiagrasses aligned with the results from artificial shading treatments. This study provides a valuable reference for selection and application of shade-tolerant zoysiagrass.

Key words: Shade tolerance, Zoysiagrass, Hybrid cultivars, Comprehensive evaluation

摘要： 为筛选结缕草（Zoysia spp.）耐荫品种，本研究选择‘马尼拉结缕草’（‘Z.matella’）和4份自主培育的杂交结缕草品种为材料，通过设置4个人工遮荫强度（0%，35%，60%，80%）处理，观测其形态指标、干物质重量和坪用质量进行耐荫性评价，并在天然遮荫条件下种植验证。结果表明：35%遮荫强度短期处理对结缕草的负面影响较小。随着遮荫时间和强度的增加，5份结缕草的覆盖度和修剪干重均呈现下降趋势，而草层高度的变化趋势相反。遮荫处理8周，所有材料的冠层干重、根系干重和根状茎干重均不同程度地降低，坪用质量也逐步下降。运用主成分分析和隶属函数法综合评价发现，‘苏植4号’‘苏植3号’和‘苏植1号’的耐荫性排名前三位。此外，在郁闭度最低的阔叶树下，这些结缕草的生长表现与人工遮荫处理结果相一致。本研究为耐荫结缕草品种的选择应用提供了参考。

关键词: 耐荫性, 结缕草, 杂交品种, 综合评价