北京地区款冬的生长发育特征调查

Investigation on Growth and Development of Tussilago farfara L. in Beijing

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 provide a scientific basis for the introduction and harvest of T.farfara in Beijing.Method:Random sampling in late growing period.Result: T.farfara reached the peak of vegetation growth in early September and comcurrently began its reproductive growth.During this periodits bud and rhizome began to form and develop and kept growing until the period of freezing weather.Conclusion:There are two optimum the times for reaping T.farara bud:one is around the fifteenth day before the period of freezing weather,and the other is around the tenth day after the thawing season in the next year. [