据全国农作物病虫害监测网预测,受干旱气候和病虫越冬基数大等多重因素影响,今年农作物重大病虫害发生将显著重于上年,各类病虫害发生面积预计将超过60亿亩次,防治任务和难度均超过常年。其中,麦蜘蛛发生面积1700万亩,比去年同期增加1.4倍,河南、山东、山西、陕西、河北、安徽、江苏等省 According to the forecast of the National Crop Disease and Pests Monitoring Network, affected by multiple factors such as the arid climate and the large number of pests and diseases overwintering, the occurrence of major pests and diseases in this year will be significantly heavier than the previous year. The pest and disease occurrences of various pests and diseases will be expected to exceed 6 billion mu, Difficulties are more than perennial. Among them, wheat spider area of ​​1700 mu, an increase of 1.4 times over the same period last year, Henan, Shandong, Shanxi, Shaanxi, Hebei, Anhui, Jiangsu and other provinces