内蒙古玉米大斑病菌孢子数量动态变化规律  

Annual Dynamic Variation of Conidium Number of Exserohilum turcicum(Pass.)Leonard et Suggs in Inner Mongolia

作　　者：李岩佳 马丽杰 郭帅领 胡小平[1] 吕金 黄卫利 梁红伟 韩艳茹 罗国君 姜立慧 李猛 云旭 LI Yanjia;MA Lijie;GUO Shuailing;HU Xiaoping;L Jin;HUANG Weili;LIANG Hongwei;HAN Yanru;LUO Guojun;JIANG Lihui;LI Meng;YUN Xu(Collage of Plant Protection.Northwest A&F University,Key Laboratory of Integrated Management of Crop Pests on the Loess Plateau,Ministry of Agriculture and Rural Affairs,Yangling Shannxi 712100,China;Ordos Vocational College of Eco-environment,Ordos Inner Mongolia 017010,China;Xi’an Huang’s Biological Engineering Co.,Ltd,Xi’an 710065 China;Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;Linhe District Agricultural Technology Extension Center of Inner Mongolia,Bayannur Innner Mongolia 015000,China;Ningcheng County Agricultural and Animal Husbandry Technology Extension Center,Chifeng Inner Mongolia 024205,China;Kailu County Agricultural and Animal Husbandry Technology Extension Center,Tongliao Inner Mongolia 028400,China;Tuquan County Agricultural and Animal Husbandry Technology Extension Center,Hinggan League Inner Mongolia 137500,China;Ordos Academy of Agricultural and Animal Husbandry Sciences,Ordos Inner Mongolia 014300,China)

机构地区：[1]西北农林科技大学植物保护学院,农业农村部黄土高原作物有害生物综合治理重点实验室,陕西杨凌712100 [2]鄂尔多斯生态环境职业学院,内蒙古鄂尔多斯017010 [3]西安黄氏生物工程有限公司,西安710065 [4]内蒙古自治区农牧业科学院,呼和浩特010031 [5]内蒙古自治区临河区农业技术推广中心,内蒙古巴彦淖尔015000 [6]内蒙古自治区宁城县农牧技术推广中心,内蒙古赤峰024205 [7]内蒙古自治区开鲁县农业技术推广中心,内蒙古通辽028400 [8]内蒙古自治区突泉县农牧技术推广中心,内蒙古兴安盟137500 [9]内蒙古自治区鄂尔多斯市农牧业科学研究院,内蒙古鄂尔多斯014300

出　　处：《西北农业学报》2024年第6期1183-1194,共12页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：内蒙古自治区科技计划(2021GG0197);农业农村部西北黄土高原作物有害生物综合治理重点实验室项目(KFJJ20210101);鄂尔多斯市产业创新人才团队项目(2022)。

摘　　要：揭示内蒙古地区玉米大斑病菌孢子的数量动态变化规律,并为玉米大斑病的预警和防控提供更科学的依据,利用孢子捕捉仪及Real-time PCR方法,连续3 a(2021-2023年)对内蒙古6个玉米主产区的空气中的分生孢子数量进行监测。结果表明,内蒙古地区玉米大斑病菌孢子数量的高峰期出现在6月中上旬和8月中下旬。相关性分析显示,6个地区监测的孢子数量与空气温度均呈正相关(P<0.05)。孢子数量与内蒙古西部3个地区(巴彦淖尔、鄂尔多斯和呼和浩特)的相对湿度呈正相关(P<0.05),与内蒙古东部3个地区(赤峰、通辽和兴安盟)的相对湿度相关性不显著。这说明在内蒙古西部地区空气温度和相对湿度是影响孢子浓度的关键因子,在内蒙古东部地区空气温度是影响孢子浓度的关键因子。To investigate the dynamic change rule of pathogen spores of Exserohilum turcicum(Pass.)Leonard et Suggs in Inner Mongolia and provide a more scientific basis for early warning and control of maize northern leaf blight,the numbers of conidia in the air of six maize-producing areas in Inner Mongolia were monitored for three consecutive years(2021-2023)by spore trapper and Real-time PCR.The results showed that the peak of the numbers of conidia in Inner Mongolia appeared in Mid-to-early June and Mid-to-late August.Correlation analysis showed that the numbers of conidia monitored in the six regions were positively correlated with air temperature(P<0.05).The numbers of conidia were positively correlated with the relative humidity in three regions of western Inner Mongolia(Bayan Nur,Ordos and Hohhot)(P<0.05),but were not significantly correlated with the relative humidity in three regions of eastern Inner Mongolia(Chifeng,Tongliao and Hinggan League).In conclusion,the key factors affecting spore concentration are air temperature and relative humidity in the west of Inner Mongolia,and the key factor affecting spore concentration is air temperature in the east of Inner Mongolia.

关 键 词：玉米大斑病 分生孢子 Real-time PCR 动态监测 气象因子 

分 类 号：S435.131.4[农业科学—农业昆虫与害虫防治]