摘要
对感病品种Ky14白肋烟黑胫病流行规律及防治方法研究表明,在四川北部地区,烟草生长季节(5~7月)的气候条件适宜黑胫病发生。其流行时间动态模型方程式为:X=1-145e-0.2123t。从发病初期开始,每隔7~10天喷施43%甲霜铜800倍液,共3次,并结合田间开沟排水等措施,对黑胫病的防效可达80%~90%。
The paper studied the epidemic law and control of the tobacco black shank with the susceptible varietyWhite Vein Tobacco Ky14 in the north area of Sichuan province. The results showed that the weather conditions favored the occurrence of tobacco black shank during the growth season of tobacco (from May to July) and the dynamic model of the disease was a singular molecular one, which predictive equation was shown as below: X=1-1.145 e-0.2123 t. The integrated measures of the chemical control by spraying MetalaxylCu 3 times and agricultural management by mainly draining water in the tobacco field could effectively control the disease development. The effect was up to 80%~90%.
出处
《西南农业大学学报(自然科学版)》
CSCD
1998年第3期243-245,共3页
Journal of Southwest Agricultural University
基金
国家级"星火"扶贫资助
关键词
烟草
黑胫病
土传性疾病
流行因素
防治
tobacco
black shank
soilbornediseases
preventive treatment
epidemic factors