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近年来,有人反映井冈霉素防治纹枯病效果不佳。原因在于喷药时间未选择好,人们防治纹枯病大都习惯安排在水稻的孕穗至破口阶段进行。根据作者观察调查,这一时期纹枯病正处于盛发扩展阶段。有些田块甚至发病已很严重。此时田间菌量大、侵染源多,防治为时已晚,笔者于1990年做了不同时期施用井冈霉素防治早稻纹枯病的试验。
In recent years, it has been reported that Jinggangmycin is not effective against sheath blight. The reason is that the spraying time is not good, people are most used to prevent and control sheath blight in the booting stage of rice to break stage. According to the author’s observation and investigation, during this period, sheath blight is at a stage of vigorous expansion. Some fields even have a very serious disease. At this time in the field of large amount of bacteria, the source of infection, prevention and control is too late, I made in 1990 at different periods Jinggangmycin control of rice sheath blight test.