Abstract: The effects of Ginkgo growth was studied under the coupling treatment of acid and aluminum (Al) by applying U₂₀₇ even experimental design and soilless culture. The results showed that Ginkgo could grow normally at the concentration of Al³⁺ of 0.4 mmol/L and below in the range of pH 4.5～5.5, while it could be damaged under the high concentration of Al³⁺ within 0.8~1.2 mmol/L. On other hand, different concentrations of Al³⁺ caused no effect on Ginkgo growth when the pH was higher than 5.0. In a word, Ginkgo growth would be affected especially root system by the coupling treatment of high concentration of Al³⁺ and low pH with the roots got dark and the new roots reduced, even died or rotted, and the plantlet would stop to grow.

Key words: pH, aluminum, Ginkgo

摘要： 本试验采用U₂₀₇均匀设计方案，通过无土栽培方法研究酸铝耦合处理对银杏幼株生长的效应。结果表明，在pH 4.5～5.5范围内，能耐铝（AlCl₃）浓度可达0.4 mmol/L，而高浓度（0.8～1.2 mmol/L）的铝对银杏有毒害作用；pH高于5.0时，提高培养液中铝浓度对银杏生长无明显影响。总之，酸铝耦合加剧对银杏植株的毒害作用，尤其对根系的伤害更为明显，甚至导致烂根死根，从而使地上部停止生长。

关键词: 酸, 铝, 银杏