The Damage of Invasive Alien Plants Avena fatua and Aegilops tauschii on Wheat Production in Xi'an

doi:10.11924/j.issn.1000-6850.casb2022-0778

Abstract

Abstract:

In order to evaluate the harm caused by the invasive weeds Avena fatua and Aegilops tauschii to wheat production in China, and to improve awareness and attention to the issue of biological invasion, this study took wheat fields in Xi'an as research objects, and thoroughly analyzed the impact of A. fatua and A. tauschii on wheat production through three consecutive years of field surveys from 2016 to 2018. It was found that A. fatua caused an average yield reduction of 16.35% in wheat, with a maximum reduction of 35.03%. The economic loss per hectare could reach 5,000 yuan, and the total wheat production in Xi'an decreased by 2.04×10⁸ kg, resulting in an annual economic loss of 3.92×10⁸ yuan and a cumulative loss of 1.18×10⁹ yuan over three years. A. tauschii caused an average yield reduction of 7.14% in wheat, with a maximum reduction of 21.35%. The economic loss per hectare could reach 3,000 yuan, and the total wheat production in Xi'an decreased by 1.24×10⁸ kg, resulting in an annual economic loss of 1.38×10⁸ yuan and a cumulative loss of 4.15×10⁸ yuan over three years. The invasions of A. fatua and A. tauschii have seriously threatened wheat production in Xi'an. To ensure biosecurity, it is necessary to follow the "Management Measures for Invasive Alien Species" and implement the risk prevention, source control, comprehensive management, coordinated cooperation, and public participation principles to establish a prevention and control system.

Key words: Invasive alien plants, Guanzhong Plain, hazards, cropland ecosystems, Avena fatua L., Aegilops tauschii Coss.

SONG Xingjiang, WANG Tao, LI Fangxiang, CHANG Xiaojian, LI Xindi, SHI Yan, WANG Jia, LIU Gang. The Damage of Invasive Alien Plants Avena fatua and Aegilops tauschii on Wheat Production in Xi'an[J]. Chinese Agricultural Science Bulletin, 2023, 39(36): 112-118.

Figures/Tables 7

References 30

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