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Earthworm activities enhance taro production by reducing weed infestation through taro-earthworm coculture

文献类型： 外文期刊

作者： Li, Tao 1 ; Fan, Jie-Qun 1 ; Qian, Hua-Wei 3 ; Wei, Ji-Hui 1 ; Qian, Zhen-Guan 1 ; Guo, Shui-Liang 2 ; Lv, Wei-Guang 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Shanghai Specialty Maize Engn Technol Res Ctr, Shanghai Engn Res Ctr Low Carbon Agr, Agr Environm & Farmland Conservat Expt Stn,Minist, Shanghai 201403, Peoples R China

2.Shanghai Normal Univ, Shanghai 200233, Peoples R China

3.Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA

关键词： Earthworm; Soil weed seed bank; Weed infestation; Sustainable agriculture; Agricultural environment

期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：6.6； 五年影响因子：6.7 ）

ISSN： 0167-8809

年卷期： 2023 年 352 卷

页码：

收录情况： SCI

摘要： Rapid global population growth increases the human demand for food. Reliance on the high input of agrochemicals in agricultural production has been shown to be unsustainable and cost ineffective. The combination of planting and breeding can maximize the utilization of agricultural resources. A novel crop-earthworm coculture model has been gradually practiced in urban agriculture in eastern China. We conducted a four-year successive study of taro-earthworm coculture farming to determine the ecological and economic benefits of the model. Our results indicated that earthworm activities in the taro-earthworm coculture system increased taro yield, economic value and net income by depleting the weed seed bank, mitigating weed infestation, and reducing the need for weeding. Compared with those in mono-taro farming, the four-year mean seed bank densities of total weeds, grassy weeds and broadleaf weeds in taro-earthworm farming decreased by 37.1%, 44.4% and 32.2%, respectively; the weed density, biomass, species richness and diversity and need for weeding decreased by 54.1%, 48.3%, 20.8%, 8.2% and 39.7%, respectively; and the taro yield, economic value and net income increased by 19.7%, 19.7% and 50.7%, respectively. Our study suggests that earthworm activities provide ecosystem services in agricultural systems, and the coculture of taro and earthworms enhances crop production by mitigating weed infestation and improving environmental quality.

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