Taking the 3-4 years clone seedling of red Toona sinensis as experiment materials, using compound orthogonal design, the effect of different proportion, treating time, treating position of gibberellic acid (GA3), 6-benzylaminopurein (BA), thioureaC. P((NH2)2CS), zincsulphate(ZnSO4), sa!tpeter(KNO3) and picking means on the bud dormancy-breaking , Mean output and quality of Toona sinensis were studied. The effective methods for breaking the bud dormancy , increasing Mean output and quality of the...