近日根据陕西各地植保部门调查,结合天气预报、栽培品种及菌源量综合分析,陕西省植物保护工作总站预计陕北马铃薯晚疫病中等发生,局部低洼、湿度大的田块重发生,发生面积100万亩。预报依据:1.气象条件。7月中下旬,陕北连续出现降雨,正值马铃薯易感病的花期,对晚疫病侵染十分有利。据陕北各地晚疫病监测预警系统点监测,目前监测点大部已进入侵染2代以上,一旦再次出现降雨,即达防治指标。天气预报陕北7~8月份气 According to the recent investigation by the plant protection department in Shaanxi Province and the comprehensive analysis of weather forecast, cultivars and bacterial sources, Shaanxi Plant Protection Station is expected to occur moderately in late blight in northern Shaanxi. The area with low-lying and high humidity reappears in an area of ​​100 Mu Forecast basis: 1. Weather conditions. In late July, continuous rainfall in northern Shaanxi coincided with the flowering period of susceptible potato diseases, which was very favorable for late blight infection. According to the monitoring and early warning system of late blight surveillance in various places in northern Shaanxi, most of the monitoring sites have now been infected for more than two generations. Once the rains appear again, they reach the target of prevention and control. North Shaanxi weather forecast August to August gas