5月以来南方大部出现了6次明显降水过程,较高的相对湿度和适宜的温度利于迁飞性害虫的迁入和发生发展。据全国农技中心预测,6～7月份,稻飞虱在华南、西南、江南 Since May, most of the southern part of the country has seen six obvious precipitation processes. The higher relative humidity and suitable temperature are favorable for the migration and development of migratory pests. According to the National Agricultural Technology Center forecast from June to July, planthoppers in southern China, southwest, southern