当前,华南、西南、江南中稻和东北单季稻处于齐穗至灌浆乳熟期,华南、江南、长江中游晚稻处于分蘖期,长江下游和江淮单季晚稻处于拔节至孕穗期,田间病虫发生发展速度快。其中稻飞虱短翅型成虫在江南和长江中下游晚稻区增长速度快,局部虫量高,重发威胁大;稻纵卷叶螟在长 At present, the single crop rice in South China, Southwest China, South China, Northeast China and Northeast China are in the ripening period from heading to filling. The late rice in South China, South China and the middle reaches of the Yangtze River is in the tillering stage, the Yangtze River and the late rice in Jianghuai single season are at the stage of jointing to booting, fast. Among them, the short-winged adults of planthopper grew fast in the southern and middle and lower reaches of the Yangtze River. The local pests were high and the threat of recurrence was high.