摘要
通过定点系统调查和统计分析,确定了环神农架烟区烟草赤星病发生与流行动态规律。结果表明,一元三次模型能较好地描述烟草赤星病的流行动态规律,可根据该模型进行病害的预测。该区域烟草赤星病整体呈流行迅速、后期平稳的特点,病程阶段可划分为病害蔓延期(移栽后65~80 d)、病害高峰期(移栽后80~99 d)和病害消减期(移栽后99~112 d)。应在赤星病蔓延期及之前(即移栽后65 d左右)进行病害积极预防。
By using system investigation and statistical analysis,the occurrence and epidemic dynamics of tobacco brown spot in tobacco-growing areas around Shennongjia were studied.The results indicated that the cubic equation model could well reflect the epidemic dynamics of tobacco brown spot.Therefore,the occurrence of this disease could be predicted using this model.Tobacco brown spot in the area showed the characteristic of spread rapidly and stable in the late.The occurrence stage of the disease could be classified into three periods:quickly spread of disease(65-80 d after transplanting),peak of disease(80-99 d after transplanting)and reduction of disease(99-112 d).The disease prevention and control should be carried out actively before the period of quickly spread(about 65 days after transplantation).
作者
黎妍妍
李锡宏
黄凯
LI Yan-yan;LI Xi-hong;HUANG Kai(Tobacco Research Institute of Hubei Province,Wuhan,Hubei 430030;Shiyan Tobacco Company of Hubei Province,Shiyan,Hubei 442012)
出处
《安徽农业科学》
CAS
2021年第23期168-170,共3页
Journal of Anhui Agricultural Sciences
基金
湖北省烟草公司科技项目“湖北省烟草赤星病生物防治技术研究与应用”(027Y2015-005)
湖北省烟草公司科技项目“烟草穿孔性叶部病害病原多样性及防控技术研究与应用”(027Y2021-004)。
关键词
环神农架烟区
赤星病
流行动态
Tobacco-growing areas around Shennongjia
Tobacco brown spot
Epidemic dynamics