摘要
为了进一步明确烟草黑胫病在不同气候区的发生、流行特点,于2012年采用系统调查和普查相结合的方法,对贵州不同气候区(威宁县、天柱县和开阳县)黑胫病的发生情况进行了调查。结果表明:烟草黑胫病在威宁、开阳、天柱3个气候区始发时间分别为8月中旬、6月中旬和6月上旬,始发期逐渐提前;最高病株率分别为0.89%、18.89%和48.44%,病情指数分别为0.15、14.71和30.37,发病率及危害程度呈逐渐加重趋势。气候条件是影响黑胫病的主要因素,而平均气温的高低是引起3个气候区烟草黑胫病发生流行早晚及轻重程度不同的最关键因子。此外,不同品种在同一气候区的发病情况不同,同一品种在不同气候区的发病情况差异较大。
In order to further clarify the occurrence and epidemic characteristics of tobacco black shank in different climatic regions,the author used a combination of systematic investigation and mass screening to investigate occurrence situation of tobacco black shank in different climatic regions of Guizhou Province (Weining County,Kaiyang County and Tianzhu County) in 2012.The results showed that the beginning period of the disease was being gradually advanced,the middle of August,the middle of June and the early of June,respectively; the highest diseased plant rate was 0.89%,18.89% and 48.44%,disease index was 0.15,14.71 and 30.37,respectively,incidence and damage degree of the disease aggravated gradually in three climatic regions.The main factors influencing the disease was climate condition,while the most important factor,influencing early or late occurrence and epidemic and the degree of the disease among the three climatic regions,was average temperature.In addition,The occurrence conditions in same climatic regions of different varieties were different.The occurrence conditions in different climatic regions of same varieties were quite different.
出处
《贵州农业科学》
CAS
北大核心
2013年第11期96-99,共4页
Guizhou Agricultural Sciences
基金
贵州省科技厅重大专项"贵州‘两高’沿线特色农业气候精细化区划与气象灾害防控"[(2011)6003]
中国烟草总公司贵州省公司科技计划项目"贵州省烟草有害生物调查研究"(201022)
"烟草植保信息服务系统的构建及病虫防治技术优化研究"(200916)
关键词
烟草黑胫病
发生规律
影响因素
气候区
贵州
tobacco black shank
occurrence regularity
influence factor
Climatic region
Guizhou