烟草马铃薯Y病毒病与气象因子的相关性

Correlation of Tobacco Potato Virus Y Disease with Climatic Factors

为了明确烟草马铃薯Y病毒病发生的适宜气候条件,依据云南昭通市昭阳区2009—2011年的病情观测数据及其同步气候观测资料,分析了气象因子对烟草马铃薯Y病毒病发生的影响。结果表明:气温、降水、日照时数与烟草马铃薯Y病毒病发生初期、盛期及其发病株率、病情指数密切相关,其发病株率、病情指数与气温、降水量均呈正相关,与日照呈负相关,在气温高、降水多、日照少的气候条件下,容易导致烟草马铃薯Y病毒病的发生蔓延。

In order to find out the suitable climatic conditions for the occurrence and epidemic of tobacco Potato virus Y （PVY） disease, the climatic factors influencing PVY disease occurrence were investigated on the basis of disease observation data and synchronous meteorological observation data at Zhaoyang District in Zhaotong City from 2009 to 2011. The results showed that temperature, precipitation and sunshine hour closely correlated to the initial occurrence data, prosperous period, disease incidence and disease index of PVY disease. Disease incidence and index positively correlated to temperature and precipitation, while negatively correlated to sunshine hour. Higher temperature, more precipitation and less sunshine hour promoted the occurrence and spreading of PVY disease.