赤霉病是麦类主要病害,在流行年份造成大小麦严重减产和品质降低。根据各地多年的经验,药剂防治麦类赤霉病的适期是在麦类的始花期。但在赤霉病重发年份,始花期往往是连续阴雨天气。为了进一步了解药剂防治适期和在不同天气条件下的防治效果,我们于1983年进行了本试验。 Fusarium head blight is the main disease of wheat, resulting in the serious year of wheat and wheat yield reduction and quality degradation. According to many years of experience in various places, the proper period for preventing and controlling wheat scab belongs to the first flowering stage of wheat. However, in the years of severe head blight, the initial flowering is often continuous rainy weather. In order to further understand the appropriate period of control and prevention and treatment of pesticides in different weather conditions, we conducted the test in 1983.