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中国农学通报 ›› 2020, Vol. 36 ›› Issue (5): 110-114.doi: 10.11924/j.issn.1000-6850.casb18100123

• 植物保护·农药 • 上一篇    下一篇

入侵植物印加孔雀草与本地植物青稞的竞争效应

仇晓玉1,2,3, 罗建1,2,3(), 土艳丽4, 李洪池1   

  1. 1 西藏农牧学院高原生态研究所,西藏林芝 860000
    2 西藏高原森林生态教育部重点实验室,西藏林芝 860000
    3 西藏林芝高山森林生态系统国家野外科学观测研究站,西藏林芝 860000
    4 西藏自治区高原生物研究所,拉萨 850001
  • 收稿日期:2018-10-31 修回日期:2019-02-14 出版日期:2020-02-15 发布日期:2020-02-21
  • 通讯作者: 罗建
  • 作者简介:仇晓玉,女,1991年出生,河南濮阳人,研究生,研究方向:植物种群与群落生态学。通信地址:860000 西藏自治区林芝市巴宜区学院路8号 西藏农牧学院,E-mail:2538343348@qq.com。
  • 基金资助:
    西藏自治区科技重大专项项目“西藏高风险区外来入侵生物及其安全性调查2期”(ZD20170021);西藏农牧学院西藏高原生态安全联合实验室开放基金资助项目“入侵植物印加孔雀草的氮、磷化学计量特征及其与共存种的竞争”(STX2018—14)

Competitive Effect Between Invasive Plant Tagetes minuta and Native Hordeum vulgare

Qiu Xiaoyu1,2,3, Luo Jian1,2,3(), Tu Yanli4, Li Hongchi1   

  1. 1 Research Institute of Tibet Plateau Ecology, Tibet Agriculture & Animal Husbandry University, Nyingchi Tibet 860000
    2 Tibet Key Laboratory of Forest Ecology in Plateau Area, Ministry of Education, Nyingchi Tibet 860000
    3 National Key Station of Field Scientific Observation & Experiment in Nyingchi Tibet, Nyingchi Tibet 860000
    4 Tibet Plateau Institute of Biology, Lhasa 850001
  • Received:2018-10-31 Revised:2019-02-14 Online:2020-02-15 Published:2020-02-21
  • Contact: Luo Jian

摘要:

为了探究入侵植物与本地植物之间的竞争关系,以入侵植物印加孔雀草和青稞为试验材料,采用添加系列试验法,在温室内设置了单种和不同比例混种方式进行控制试验。试验结果表明:(1)种间竞争降低了印加孔雀草的生物量、含水量,增加了其株高;降低了青稞的生物量、含水量和株高。(2)印加孔雀草的相对产量(RYTm)在0.78~0.98,差异不显著;青稞的相对产量(RYHv)在0.09~0.73,差异显著;混种对植物的影响为印加孔雀草小于青稞。(3)印加孔雀草和青稞的相对产量总和(RYT)在0.53~0.86,二者利用共同资源且有竞争关系。(4)印加孔雀草对青稞的竞争攻击力系数(A)在0.23~0.80,印加孔雀草竞争力强于青稞。研究表明:印加孔雀草和青稞混种时种间竞争>种内竞争,印加孔雀草的竞争力强于青稞,印加孔雀草影响青稞正常生长。

关键词: 印加孔雀草, 青稞, 竞争, 入侵植物, 本地植物

Abstract:

To explore the competitive relationship between the invasive plants and the native plants, this study used Tagetes minuta and Hordeum vulgare as experimental materials, and adopted the addition series experiment method, to carry out the control experiment in greenhouse by mixing single species and different proportions. The results showed that: (1) interspecies competition reduced the biomass and water content of Tagetes minuta but increased its plant height; the biomass, water content and plant height of Hordeum vulgare were reduced; (2) the relative yield (RYTm) of Tagetes minuta was 0.78-0.98, the difference was not significant; the relative yield (RYHv) of Hordeum vulgare was 0.09-0.73, the difference was significant; the influence of mixed planting on Tagetes minuta was less than that on Hordeum vulgare; (3) the sum of their relative yield (RYT) of Tagetes minuta and Hordeum vulgare was 0.53-0.86, which indicated the two used common resources and had a competitive relationship; (4) the competitive aggressivity coefficient (A) of Tagetes minuta on Hordeum vulgare was 0.23-0.80, and Tagetes minuta was more competitive than Hordeum vulgare. The study reveals that interspecies competition is more than intraspecies competition when Tagetes minuta and Hordeum vulgare are mixed planted, Tagetes minuta is more competitive than Hordeum vulgare, and could affect the normal growth of Hordeum vulgare.

Key words: Tagetes minuta, Hordeum vulgare, competition, invasion, invasive alien plants, native plants

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