伊犁地区甜菜褐斑病田间消长规律及其与气象因子的关系  

Population Dynamics of Sugar Beet Cercospora Leaf Spot in Ili and the Relationship between the Meteorological Factors

作　　者：杨安沛[1,2] 李迎春[3] 孙桂荣 曹禹 段永辉 冯慧芳 托尔洪 郭庆元[1] 马俊义[2] 

机构地区：[1]新疆农业大学农学院,乌鲁木齐830052 [2]新疆农业科学院植物保护研究所/农业部西北荒漠绿洲作物有害生物综合治理重点实验室,乌鲁木齐830091 [3]新疆出入境检验检疫局,乌鲁木齐830063 [4]伊犁州农业科学研究所,新疆伊宁835000 [5]昭苏县农业技术推广站,新疆昭苏835600

出　　处：《新疆农业科学》2014年第4期679-684,共6页Xinjiang Agricultural Sciences

基　　金：国家现代农业产业技术体系"国家甜菜产业技术体系虫害防控岗位"(CARS-210201)

摘　　要：[目的]摸清伊犁地区甜菜褐斑病田间消长规律、发生动态以及气象因子与该病的关系,为预测预报和制定防控策略提供依据.[方法]从甜菜褐斑病发病初期开始,采用定点定期系统调查方法.[结果]伊犁地区甜菜褐斑病发生时期为7月初至9月底.发生初期为7月上中旬,发生高峰期为8月下旬至9月上旬.病害整个发展过程包括三个时期,即从7上旬至7月底为病害发展平缓期,7月底至8月底为病害快速发展期,8月底以后为病害发展衰退期,病情逐渐下降.7月中下旬～8月上中旬的温湿度、降雨量、雨日天数与甜菜褐斑病病情增长率相关性密切.[结论]摸清了伊犁地区甜菜褐斑病田间消长规律,气温是影响该病的基本因素,平均气温在20～ 25℃,对病害发展有利,与病情增长率呈正相关,相对湿度、降雨量、雨日天数在病害快速扩展期相关性较为密切.[Objective] The project aims to find out the population dynamics of sugar beet cercospora leaf spot in fields in Ili area and the relationship between the disease and meteorological factors in the hope of providing the basis for forecasting and developing prevention and controlling strategies.[Method] From the early onset of sugar beet leaf spot,systematic investigations was conducted in the definite place and time.[Result] Sugar beet cercospora leaf spot occurred at the beginning of July until the end of Sept.The earliest time was mid-July and the peak period was from late Aug.to early Sept.The diseases development included three periods.The beginning to the end of July 7 was a slow disease development period,but from the end of July to the end of Aug.was the rapid development stage.After the end of August,it was the recession time and the disease gradually decreased.Air humidity,rainfall,number of rainy days in late July and early and mid Aug.were closely related to the disease indexes.[Conclusion] The population dynamics of sugar beet cercospora leaf spot in fields in Ili was made clear.Temperature was the fundamental factor affecting the disease,and as long as the average temperature maintained at 20℃ ～25℃,it would be favorable for disease development.The growth rate was positively correlated with the disease,and relative humidity,rainfall,number of rainy days were more closely related to the growth rate at the disease rapid expansion period.

关 键 词：甜菜褐斑病 消长规律 气象因子 

分 类 号：S435.663[农业科学—农业昆虫与害虫防治]