Chinese Journal of Agrometeorology ›› 2020, Vol. 41 ›› Issue (01): 24-33.doi: 10.3969/j.issn.1000-6362.2020.01.003

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Screening and Control Effects of Different Alternative Plants on Mikania micrantha

SONG Zhen, WANG Zhong-hui, FAN Zhi-wei, ZHANG Rui-hai, ZHANG Guo-liang, FU Wei-dong   

  1. 1.Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China;2. Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101
  • Online:2020-01-20 Published:2020-01-20

Abstract: Mikania micrantha is a perennial invasive weed, which can seriously destroy the biodiversity of the invaded area. Biological substitution can not only effectively reduce the harm of M. micrantha, but also achieve ecological and economic benefits. According to the main habitat conditions of M. micrantha invasion, a variety of plants suitable for growing in the invaded area of M. micrantha were selected as the alternative plants. In this research, we studied the effects of different plants on the prevention and control of M. micrantha. Plant height, biomass (fresh weight and dry weight), properties of root soil, chlorophyll content, leaf area and photosynthetic rate of alternative plants and M. micrantha were measured by pot experiments, in order to screen out the best alternative plants. The results showed that among the 15 alternative plants suitable for the local habitats, Mosla chinensis and Stylosanthes guianensias had the best control effects on M. micrantha. When M. chinensis and S. guianensias were planted together with M. micrantha, the plant height and biomass of M. micrantha were the lowest of all the 15 groups. Further studies showed that M. chinensis and S. guianensias could inhibit the growth of M. micrantha without affecting its own growth. Compared with the control group, the leaf area, chlorophyll content and photosynthetic rate of M. micrantha showed a significant downward trend. The results of this study showed that M. chinensis and S. guianensias are good alternative plants to control M. micrantha.

Key words: Mikania micrantha, Alternative control, Screen, Control effect