Abstract:

This study utilized the Zaoxiaoyangju（Chrysanthemum morifolium cv. Hangbaiju）from Tongxiang area as the experimental material to investigate the regulatory effects of five plant growth regulators，namely 6-benzylaminopurine（6-BA），kinetin（KT），paclobutrazol（PP₃₃₃），chlorocholine chloride（CCC），and naphthaleneacetic acid（NAA），on its flowering period and yield. The results showed that application of 10 mg·L^-1 KT advanced the flowering period by 6 days and increased the yield by 23.00%；30 mg·L^-1 PP₃₃₃ advanced the flowering period by 6 days and increased the yield by 21.60%；5 mg·L^-1 NAA advanced the flowering period by 2 days and increased the yield by 24.88%，which was the highest increase among all treatments. The regulatory schemes screened in this study can extend the harvesting period through staggered harvesting，alleviate labor pressure，and provide a scientific basis for the sustainable development of the Chrysanthemum morifolium cv. Hangbaiju industry.

Key words: Chrysanthemum morifolium cv. Hangbaiju, flowering period, plant growth regulators, yield