不同沙埋厚度下入侵植物刺苍耳种子萌发和幼苗生长

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中图分类号：S451.1 文献标识码：A 文章编号：1007-0435（2026）01-0182-09

Abstract：Xanthium spinosum，a highly invasive plant known for its rapid reproduction and widespread disper sal，significantly impacts the production offood and forage crops.It leads to reduced crop yields，diminished quality，and pasture degradation，making itscontrolcrucial for agricultural production.Inthis study，weinvestigated the effects of six sand burial depths （ 1cm ， 2cm ， 3cm ， 5cm ， 7cm ，and 9cm ）on seed germination， seedling growth，and allometric relationships of X. spinosum. The aim was to explore the ecological control of X. spinosum and the crop sowing strategies. The results were as follows： The germination index and emergence rate in the 7cm and 9cm burial depth treatments were significantly lower than those in other treatment groups.The plant height，plant weight，number of thorns，and thorn length were allsignificantly lower than those in the treatments with burial depths of 1cm and 2cm . （P<0.05） .The root-to-shoot ratio in the 7cm and 9cm burial depth treatments was significantly higher than that in other treatment groups （ P<0.05） .The allometric exponent of stem dryweight in the 3cm burial depth was significantly lower than those in the 5cm ， 7cm ，and 9cm treatment groups （ P<0.05） .Overall，deeper sand burial inhibited the seed germination and seedling growth of X. ，spinosum. Therefore，this study laid a theoretical foundation for the scientific prevention and control of X. spinosum and crop sowing. It is advisable to conduct deep plowing before crop sowing.

Key words：Sand burial depth;Biological invasion; Allometric growth;Biomass;Xanthium spinosum

随着全球经济一体化进程的加速以及旅游业的蓬勃发展，外来物种的传播呈现出更加频繁且广泛的特征。（剩余15222字）