关键词: 菊芋, 生物量, 物质积累速率, 相关性

Abstract: Through dynamic monitoring of Horqin sandy land of white and red Helianthus tuberosus L. each organ biomass yield, this paper explored material accumulation rate and material allocation law in Horqin sandy land of Helianthus tuberosus L.，so as to provide basis for the development and utilization of Helianthus tuberosus L.. The results showed that  the stem/leaf ratio of white Helianthus tuberosus L. showed a chanfing trend of first increased then decreased, while the  stem/leaf ratio of red Helianthus tuberosus L. was gradually increasing. During the whole growth and development  period, the stem/leaf ratio of red Helianthus tuberosus L. was high than that of the white one, while, the root shoot ratio of  white Helianthus tuberosus L. was greater than that of the red one. There was no significant difference between the leaf mass ratio，flower mass ratio and tuber mass ratio of these 2 varieties，under the same sampling time. In different organs, the substance accumulate rates were not the same. Among all organs, the tuber showed the changing tendency of first increase then decreas in September. Except flower organ， there were also significant differences in substance allocation rates of the same organs between these 2 different Helianthus tuberosus L. varieties.

Key words: Helianthus tuberosus L., biomass, material accumulation rate, correlation