黄土高原马铃薯晚疫病潜势预报及其对策*

应用黄土高原典型区域马铃薯晚疫病观测资料,分析气象因子与马铃薯晚疫病扩散流行的关系,建立马铃薯晚疫预测模式。结果表明,马铃薯晚疫病发病率与环境湿度、大气降水量、空气温度呈正相关,与光照时数、风速呈负相关。持续阴雨天气有利于晚疫病扩散流行。当农业生产及作物栽培管理可控条件一定时,气象因子是马铃薯晚疫病扩散流行的关键因素。建立了马铃薯晚疫病发扩散流行预测预报模式,为马铃薯晚疫病防控模型提供科技支撑。

Potential prediction and Countermeasures of Potato Late Blight in Loess Plateau

Based on the observation data of potato late blight in typical areas of the Loess Plateau, the relationship between meteorological factors and the spread of potato late blight was analyzed, and the prediction model of potato late blight was established. The results showed that the incidence rate of potato late blight was positively correlated with environmental humidity, atmospheric precipitation and air temperature, and negatively correlated with light hours and wind speed. Continuous rainy weather is conducive to the spread of late blight. Meteorological factors are the key factors for the spread of potato late blight when the controllable conditions of agricultural production and crop cultivation management are certain. The prediction model of potato late blight was established to provide scientific and technological support for the prevention and control model of potato late blight.