目前,有读者来电反映,在今年的土豆种植中,当地出现了大面积的晚疫病,出现时间有先后,他们按照传统的治疗方法进行处理,但由于没有找到有效的防治措施,仍然造成了大面积减产,给当地农民造成了很大损失,一些农户甚至因此放弃了再种土豆的想法。当地农民很着急,他们急切地想知道到底是什么原因导致晚疫病大面积发生,又如何能有效防治? At present, some readers’ calls reflect that a large area of ​​late blight appeared in this year’s potato planting. The time was up and down. They were treated according to the traditional treatment methods. However, no effective prevention and treatment measures were still found, resulting in a large The reduction of area has caused great losses to local farmers and some farmers even gave up the idea of ​​re-growing potatoes. Local peasants are in a hurry and they are eager to know exactly what causes pest outbreaks in large areas and how can they be effectively controlled?