We studied the effect of preweeding size of undesirable plants competing against planted hinoki (Chamaecyparis obtusa) trees on their resprouting ability subsequent to weeding in a warm-temperate region. Further, we investigated the period of heterotrophic-dominative growth by estimating the contribution toward growth in height of the preweeding tree size in terms of total basal area (TBA) and stem height at the initial stage of resprouting. No positive correlation was found between size of the sprouts (in terms of height and D²H, product of DBH² and height) and the preweeding tree size (in terms of TBA). These results may be related to the contribution of the parental stumps on the growth of sprouts having diminished at an early stage of growth, indicating that the period of heterotrophic-dominative growth of sprouts was limited to the very early stage subsequent to weeding. On the other hand, an increase of preweeding tree TBA had a positive effect on the number of the sprouts, which can increase the time required for the practice of weeding.

我们研究了在温暖温带地区除草后，与种植的扁柏（Chamaecyparis obtusa）树木竞争的杂草的预除草尺寸对其繁殖能力的影响。此外，我们通过在再萌芽初期估算总面积（TBA）和茎高，估算了除草树大小高度对生长的贡献，从而研究了异养型优势生长时期。在豆芽大小之间没有发现正相关（就高度和DBH ^2的乘积D ² H而言）和高度）和除草树的大小（以TBA表示）。这些结果可能与亲本残端对芽苗生长的贡献有关，芽苗在生长的早期阶段已经减少，这表明芽的异养为主的生长时期被限制在除草之后的非常早期。另一方面，预除草树TBA的增加对芽的数量产生积极影响，这可以增加除草实践所需的时间。