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叶用园银杏叶最佳采叶期为9月底至11月初,脱落素、乙烯利、氮肥+乙烯利、地膜处理不仅能提高叶黄酮含量,而且还能改变最佳采叶期的时间长短。在最佳采叶期内,脱落素、乙烯利、氮肥+乙烯利、地膜处理比对照分别提高黄酮含量16.2％、11.4％、10.0％、3.2％。方差分析表明,脱落素效果最优,乙烯利次之,其中脱落素与对照及其他处理之间、乙烯利和氮肥+乙烯利与对照、地膜处理之间差异均达极显著水平;脱落素、乙烯利、氮肥+乙烯利处理均缩短了最佳采叶期,而地膜处理则延长了最佳采叶期。
Leaf ginkgo biloba leaves the best harvest period from the end of September to early November, abscisic acid, ethephon, nitrogen fertilizer + ethephon, film treatment can not only increase the content of leaf flavonoids, but also change the optimal time for harvesting period. During the optimal leaf-picking period, the contents of flavonoids were increased by 16.2%, 11.4%, 10.0% and 3.2%, respectively, compared with the control. Variance analysis showed that the effect of the best, ethephon of flax, followed by the flavin and the control and other treatments, ethephon and nitrogen fertilizer + ethephon and the control, the difference between the two treatments reached a significant level; Lee, nitrogen fertilizer and ethephon treatment were shortened the best leaf harvesting period, while the membrane treatment is the extension of the best leaf harvesting period.