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对兰考泡桐一年生苗木顶芽休眠期进行不同的平坦处理，结果表明，１０月下旬至１１月下旬实施平埋是可行的，苗木顶芽越冬率无显著性差异；平埋覆土类型（粘土、沙土、两合土）对顶芽越冬率无显著性差异；平坦方式（顶芽不埋，其它部位平埋；干部不埋，其它部位平埋；整株平埋）对苗木顶芽越冬率影响差异显著；平埋深度对苗木顶芽成活率的影响差异极为显著．兰考泡桐苗木顶芽失水速率高于侧芽和枝条．顶芽相对含水率与旬平均气温较为相关．
The results showed that it is feasible to carry out flat burial in late October to late November, and there is no significant difference in the overwintering rate of seedling buds. The types of flat burial (clay, sandy soil , Two combined soil) on the overwintering rate of the top bud no significant difference; flat way (top bud is not buried, buried in other parts; cadres are not buried, other parts of the flat buried) Significant; depth of burial depth of seedling buds survival rate difference is extremely significant. Lantau Paulownia seedling top bud water loss rate higher than the lateral buds and branches. The relative water content of top bud is more related to the average temperature of ten days.