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全国农业技术推广服务中心9月21日称,当前,华南和江南双季晚稻处于孕穗至抽穗期,长江中下游单季晚稻大部处于抽穗至灌浆期乳熟期,迁飞性害虫和流行性病害对后期产量形成仍存在较大威胁。其中,稻飞虱在华南和江南稻区监测到回迁峰,回迁范围广、虫量大;稻瘟病在华南、江西西部病叶率明显高于上年同期,田间菌源充足,穗颈瘟重发风险高。一、迁飞性害虫稻飞虱在华南、江南和长江中下游稻区当前发生面积1.02亿亩次,同比
National Agricultural Technology Extension Service Center, September 21 said that at present, southern and southern double cropping late rice in the booting to heading date, most of the middle and lower reaches of the Yangtze River single crop late rice in the heading to the filling stage of milky ripening, migratory pests and epidemic Disease is still a big threat to the late yield formation. Among them, the planthoppers in the southern and southern areas of rice to monitor the migration back to the peak, a wide range of migration back, large amount of pests; rice blast in southern China, western Jiangxi Province was significantly higher than the same period leaves, field sufficient bacteria, panicle blast weight High risk of hair. First, the relocation of pests Planthopper in southern China, the Yangtze River and the Yangtze River in the middle and lower reaches of the current area of 102 million mu times, year on year