重庆山地荞麦病原生物学特性及其流行特征研究

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中图分类号：S432 文献标识码：A文章编号：2097-1354（2025）04-0048-08开放科学（资源服务）标识码（OSID）：

Study on the Biological Characteristics of Pathogens and Epidemiological Features of Buckwheat Diseases in the Mountainous Areas of Chongqing

LI Junbao1， RAN Wenxiu1， LI Huaming²，RAN Yuanlong²， DING Mengqi²， ZHANG Yingtao4

1.YouyangAgricultural Technology Extension Station，Chongqing 409899，China；

2. Zhongxian Agro-Tech Extensionand Service Center，Chongqing 404300，China；

3.College of Agronomyand Biotechnology，Southwest University，Chongqing 400715，China；

4.ChongqingMunicipal Agricultural Technology Extension Station，Chongqing401121，China

Abstract： In recent years， buckwheat has been transitioned from traditional extensive cultivation to modern large-scale production due to its exceptional nutritional value aligning with contemporary dietary demands. However，the intensified monoculture practices have triggered a decline in farmland biodiversity， leading to regional outbreaks of diseases that significantly reduce both yield and nutritional quality. This study systematically summarized the types of fungal diseases in domestic buckwheat through integrated literature review and field surveys，with a focus on the disease ecological characteristics of buckwheat in the main production areas of Youyang County， Chongqing—specifically the Banxi Town buckwheat planting base. Through field survey method，it was found that the incidence of common buckwheat was 48.2% which significantly higher than 13.6% of tartary buckwheat. Leaf diseases accounted for 30.9% of infections， with primary symptoms including leaf spot，ring spot，canker，and wilt，while no significant stem diseases were observed. Pathogen isolation from diseased samples，combined with morphological analysis and ITS phylogenetic analysis，identified the dominant pathogens as Alternaria spp.， Phoma spp.， Fusarium spp.，and Nigrospora spp. Based on these findings，this study innovatively proposed an “integrated genetic resistance and bioecological management” framework，aiming to provide theoretical and technical support for the green and sustainable development of buckwheat industry in the mountainous regions of Southwest China.

Key words： buckwheat； fungal diseases； pathogen identification； integrated genetic resistanceand bioecological management

荞麦，又称乌麦或三角麦，为蓼科（Polygonaceae）荞麦属（Fagopyrum）一年生双子叶草本作物[1]。（剩余9735字）