人工生草对干热河谷区芒果园杂草多样性和群落结构的影响

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中图分类号：S667.7 文献标识码：A 文章编号：1007-0435（2025）04-1228-11

Abstract：To analyze the efects of artificial grass on weed diversityand community structure in Mango orchard， fiveleguminous grasss，Stylosanthes guianensis， Indigofera hendecaphylla，Medicago satiua，Trifolium pratense and Macroptilium lathyroides，were used to carry out grassing experiments in Mango orchard，and natural grass treatment in Mango orchard was used ascontrol. The efects of artificial grass on the niche，diversity， community structure similarityand functional groups of weeds in Mango orchard were studied.The results indicated that，compared to natural grass cover，al five artificial grassing models effectively reduced the biomass， species count，individual count，and ACE（Abundance-based Coverage Estimator） values of weeds in mango orchard，while enhancing the weed diversity in the dry-hot valleyregions.The introduction of artificial grassing impacted the niche breadth and overlap of weeds in Mango orchard，altering their ecological niches，functional groups，and community structures，and increased the ecological stability oftheorchards. Among the fiveartificial grassing models，the Indigofera hendecaphylla grassing model exhibited higher weed diversity and lower weed biomass， making it the most ideal weed management strategy for mango orchard in the dry-hot valley region.

Key words：Orchard grass；Mango orchard； Weed diversity；Community structure

杂草防控是果园管理中存在的难题，果园杂草防治不当，会导致杂草丛生，病虫害频发，严重则影响果树的生长和产量[1]。（剩余14179字）