There was a significant quadric relationship between the content of ginkgo biloba leaf flavonoids and the dosage of HAF. The regression equation was as following: yHAF=8.1527+ 0.0245.X-0.00006A:2, 7? =0.9788*.

• 1 施肥能够显著提高银杏叶有效成分黄酮的含量，黄酮含量与腐植酸复合肥的不同用量间呈显著二次曲线相关，回归方程为y_(HAF)=8.；1527+0