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根据当前早稻长势、病虫发生情况、未来气候趋势和历年浙江省病虫发生规律等因素,经会商,预计今年浙江省早稻中后期病虫总体为中等发生。其中:纹枯病为中等偏重发生;二代二化螟为中等发生,局部偏重发生;白背飞虱、稻纵卷叶螟中等发生。具体发生趋势预测如下:纹枯病:预计中等偏重发生,发生面积约170万亩。白背飞虱:预计中等发生,发生面积约150万亩次。
According to the current state of early rice growth, the occurrence of pests and diseases, the future climate trends and perennial pests and diseases in Zhejiang Province and other factors, after consultation, it is estimated that the pest and disease in the middle and late stage of early rice in Zhejiang this year will occur moderately. Among them, the sheath blight occurred moderately, the second generation rice stem borer occurred moderately and the partial serious occurred. The whitebacked planthopper and the rice leaf roller occurred moderately. Specific trends are as follows: Sheath blight is expected to occur moderately, the occurrence of an area of about 1.7 million mu. White-backed planthoppers: Expected to occur moderately, with an area of about 1.5 million mu times.