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目的研究不同采收期紫锥菊质量和产量的变化。方法通过对不同采收期的紫锥菊进行产量测定和物候期观察,并采用HPLC法对紫锥菊中的菊苣酸进行动态变化研究。结果一年生紫锥菊地上部分的产量以11月2日(果熟期)采收的最高,比盛花期产量高38.3%,地下部分产量以9月15日(盛花期)采收的最高,从9月15日到11月2日地下部分产量有少量的降低,但变化不大;地上部分菊苣酸量从7月10日(蕾前期)到9月27日(盛花期)变化不大,但从9月27日到10月20日(果期)有一个降低的过程,从10月20日到11月2日又有所回升,地下部分菊苣酸量变化趋势与地上相似;两年生紫锥菊产量及菊苣酸量变化与一年生相似,但地下部分产量在果熟期最高,其全株产量是一年生植株的2.7倍。结论广州产紫锥菊以果熟期为最佳采收期,栽种两年比栽种一年更为合理。
Objective To study the changes of Echinacea purpurea quality and yield at different harvest time. Methods The yield and the phenophase of Echinacea purpurea collected at different harvesting stages were observed. The contents of ciclofenac in Echinacea purpurea were determined by HPLC. Results The annual yield of Eichhornia crassipes had the highest yield on November 2 (mature stage), 38.3% higher than that on full flowering stage, and the highest partial yield on September 15 (full flowering stage). From September There was a slight decrease in the underground production from the 15th to the 2nd of November, but the change was insignificant. The acid content of aboveground parts did not change much from July 10 (early bud) to September 27 (full bloom), but from 9 From January 27 to October 20 (fruit period), there was a process of decrease, which rose again from October 20 to November 2, and the trend of acid content in the underground part was similar to that on the ground. The biennial yield of Echinacea The change of acidity was similar to that of annual, but the yield of the underground part was the highest in ripening period, and the whole plant yield was 2.7 times that of the one-year-old plant. Conclusion Guangzhou echinacea maturity as the best harvest period, planted two years more than a year planted more reasonable.