江西早稻穗瘟发生的气象条件监测预警方法

Methods of Meteorological Condition Monitoring and Early-warning for Early Rice Neck Rot Disease in Jiangxi

稻瘟病的发生受气象环境的影响显著,因此根据代表江西不同区域站点的早稻穗瘟发生情况,选取病害同期气象资料,从稻瘟病病菌致病所要求的气象条件出发,利用温度、湿度、降水、日照等气象因子构建天气促病指数,并将之划分为有利、较有利、不利3个级别来反映气象条件对早稻穗瘟发生的适宜程度。对比分析检验与监测试用情况的结果表明,模型对病害发生气象适宜程度的指示性较好。

The occurrence of rice blast is closely related to the meteorological conditions. According to situations of the early- rice neck rot disease occurred in different sites in Jiangxi, the data of the disease and meteorological conditions in the same period were selected to analyze the meteorological conditions needed for rice blast, and the disease-causing index Z was founded by taking account of air temperature, humidity, precipitation, sunshine, and other meteorological factors. According to different meteorological suitability for early rice blast, the index Z was divided into three levels, which were the most suitable, more suitable and unsuitable. The results of comparative analysis and test application showed that the index Z could well indicate meteorological suitability for early rice blast.