目的 :观察款冬生殖生长期主要生长发育特征 ,为款冬引种和采收花蕾时参考。方法 :于生长后期定期随机采样调查。结果 :在北京地区 9月初 ,款冬的营养生长达到高峰 ,同时又是生殖生长期的开始 ,花蕾和根状茎开始形成 ,并逐渐发育长大 ,至土壤封冻前 ,其生长量达到最大值。结论 :花蕾的最适采收期为当年土壤封冻前15d左右和第 2年土壤解冻后 10d左右。 Objective: To observe the main growth and development characteristics of the coltsfoot during the reproductive growth period, and refer to the introduction and harvesting of buds for Coltsfoot. Methods: Random sampling at regular intervals during the late growth period. Results: At the beginning of September in Beijing, the vegetative growth of Coltsfoot reached a peak, and at the same time, it was the beginning of the reproductive growth period. The buds and rhizomes began to form, and they gradually developed and grew to the maximum before the soil was frozen. Conclusion : The optimal harvest time of buds is about 10 days before the soil is frozen about 15 days before and after the soil is frozen in the second year.