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4月上旬以来,水稻“两迁”害虫开始大量迁入我国南方稻区发生为害。近期华南和西南稻区灯下、田间虫量迅速上升,部分稻区虫量明显高于大发生的上年同期,江南稻区也已开始迁入。据中国气象局预测,今年南海夏季风暴发时间比常年提早10天左右,西南、华南、江南等地可能提前进入主汛期。
Since the beginning of April, pests of rice and “two relocations” have begun to massively move into the rice planting areas in southern China, causing damage. In the recent lightings in South China and Southwest China, the amount of insects in the field increased rapidly. The amount of insects in some rice areas was significantly higher than that in the same period of the previous year, and the rice planting areas in southern China started to move in. According to the forecast of China Meteorological Administration, the onset of the summer monsoon in the South China Sea this year will be about 10 days earlier than usual. The southwest, southern China and southern Jiangnan may enter the main flood season ahead of time.