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1993～1995年，以汕优63、K优3号和K优5号为材料，研究了杂交中稻抽穗后再生芽生长与头季稻茎鞘物质积累的关系。头季稻齐穗后15d内，叶片光合产物主要输送到穗部，以致再生芽生长缓慢．该期即使有较好的光照条件和氮素营养，对再生芽伸长也无作用；头季稻齐穗后20d，即穗部籽粒充实度达90％左右，叶片较多光合产物逐渐向茎鞘输入，再生芽生长开始加快，此期光照和施氮促进再生芽伸长的作用才表现。头季稻籽粒灌浆速率与再生芽伸长速率呈极显著负相关，头季稻穗部物质积累量和收获指数分别与再生芽长呈极显著负相关。头季稻生长后期叶片光合产物的输送方向是影响再生芽生长的主导因素。
From 1993 to 1995, with Shanyou 63, K You 3 and K you 5 as the materials, the relationship between the regenerated shoot growth after heading and the material accumulation of stems and sheaths in the first season was studied. Within fifteen days of the first heading season, photosynthetic products of leaves were mainly transported to the ear, resulting in the slow growth of regenerated shoots. In this period, even though there were better light conditions and nitrogen nutrition, it had no effect on the elongation of regenerated buds. After 20 days of heading, the seed fullness of panicles was about 90% Sheath input, regeneration of buds began to accelerate the growth of this period of light and nitrogen fertilizer to promote the elongation of regenerated buds before the performance. The grain filling rate of the first season rice was significantly negatively correlated with the elongation rate of the regenerated shoot, while the material accumulation and harvest index of the first season rice were extremely significantly negatively correlated with the regeneration bud length. The heading of photosynthate in the first crop of rice at the later growth stage is the dominant factor that affects the growth of regenerated shoots.