“柳叶头”是菊花的一种生理病态。这种病态如发生在8月下旬以前,大多数品种都可自上部叶腋萌发新枝而开花。据观察,在菊花生育后期的8月下旬至9月上旬,部分品种仍会发生“柳叶头”。这时如再施行人工摘除或任其自行萌发侧枝,势必会造成花期推迟、花姿欠佳而影响观赏,甚至会发生哑花。如对这种晚期“柳叶头”采取保护性措施,不但可以令其 “Liu Ye Tou” is a physiological state of chrysanthemum. This morbid state occurs before the end of August, and most species bloom from new axils of the upper leaves. It is observed that in late chrysanthemum late August to early September, some species will still occur “willow head.” At this time, if the manual removal or any of its own germination of collateral branches, it is bound to result in postponement of flowering, poor posture affect the viewing, and even dull flowers. If this late “willow head” to take protective measures, not only can make it