外来入侵甜菜孢囊线虫在新疆的适生性分布及风险评估

目的] 甜菜孢囊线虫是世界性的重要进境检疫性有害生物，每年造成严重的经济损失。甜菜是新疆重要的优势经济作物，总产量占全国总产量一半以上。对新疆开展甜菜孢囊线虫适生性分析及风险评估，旨在为我区重大外来有害生物的科学预警及防控提供指导。方法] 采用BIOCLIM模型对甜菜孢囊线虫在新疆的具体潜在分布区进行预测，并采用多指标赋值运算，对其入侵的风险进行定量分析。结果] 甜菜孢囊线虫在新疆荒漠绿洲区的适生区域主要集中在阿勒泰市、塔城、博乐市、伊犁州、乌鲁木齐市、昌吉州、库尔勒市、阿克苏乌什县和拜城县和哈密市的巴里坤哈萨克族自治县。甜菜孢囊线虫的危险性综合评估风险值R为2.397，属于高度危险等级。结论] 新疆主要甜菜种植区为甜菜孢囊线虫的高度适生区，需要高度重视，其预测结果为建立甜菜孢囊线虫长效预警与防控机制提供必要的理论基础。

Potential geographic distribution and risk analysis of alien invasive species sugar beet cyst nematode Heterodera schachtii in Xinjiang Uygur Autonomous Region

Aim] Heterodera schachtii is the most important quarantine pest worldwide of beets, causing serious annual yield losses. H. schachtii is an important cash crop in Xinjiang, and its yield accounts for more than half of the total national output. The purpose of this study is to provide guidance for scientific early warning and control by analyzing and predicting the potential geographic distribution and risk assessment of H. schachtii in Xinjiang.Method] BIOCLIM model was used to predict the potential distribution of H. schachtii in Xinjiang, and multi-index assignment was used to analyze the risk of invasion.Result] Altay, Tacheng, Bole, Ili, Urumqi, Changji, Korla, Aksu, Wushi, Baicheng and Balikun Kazakh Autonomous Counties in Xinjiang were suitable areas for the occurrence of H. schachtii. The comprehensive risk assessment value of this nematode was 2.397, belongs to the high-risk level.Conclusion] H. schachtii could occur at the major sugar beet growing areas of Xinjiang with the high-risk. The results provide the necessary theoretical basis for establishing a long-term early warning and control mechanism of H. schachtii.