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作者研究了盆栽和林地两种条件下楸叶桐的粗生长和高生长节律，结果表明：１年中楸叶桐虽然开始生长晚，但生长期仍可达１８０天以上，是典型的生长持续型树种；粗生长和高生长都经历“慢—快—慢直至停止”这样３个历时不同的生长阶段，但粗生长开始早，结束晚，比高生长的生长期长３０～４５天；无论粗生长或高生长，在立地条件好的条件下，春季的缓慢生长期短，而速生期持续的时间长。此项研究为楸叶桐的丰产栽培特别为施肥、浇水提供了依据。
The author studied the thick growth and high growth rhythm of Catalpa bungei under potted and woodland conditions. The results showed that although the growth of Catalpa bungei reached a maximum of 180 days in one year, the growth was still typical Type of tree species; coarse growth and high growth experienced “slow - fast - slow until stop” such three diachronic growth stages, but coarse growth began early, late late, growing longer than the growing period 30 to 45 days; regardless of Rough growth or high growth, in the site conditions are good conditions, the spring slow growth period is short, and fast-lasting period of time. This study provides a basis for high yield cultivation of Catalpa bungei, especially for fertilization and watering.