PROBLEM TO BE SOLVED: To solve the problem that a naturally growing tree that is unlikely to grow into a straight tree loses value thereof as a commodity lumber.SOLUTION: There is provided a method for growing Melia azedarach on a flatland, in which seedling trees are planted on the flatland around March and germinated around April spring disbudding and summer disbudding are each performed in spring and summer in a current year and the next year, an apical bud which is the side bud located at the highest position remains among buds of each germinated seedling tree while the side buds therebelow are cut, and the apical bud is left to grow as it is the trees are thinned about twice almost every four years after the planting the trees are thinned for use when they reach 12 years of age so that the population density of the remaining trees becomes about 100 trees per 1 ha and then, they are left to grow until they reach about 20 years of age.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】通直材に成長しにくい自生樹木は、商品材としての価値が低下する問題があった。【解決手段】苗木を3月頃に平地に植樹して、4月頃に発芽させ、当年およびその翌年の2年目の春と夏の季節にそれぞれ春芽かきと夏芽かきを行うことにより発芽苗木の芽のうち最も高い位置の脇芽である頂芽を残してその下方の脇芽を切断し、そのまま成長を放置し、その後、植樹から約4年ごとに約2回の間伐、樹齢12年目に利用間伐を行い、残樹木の1ha当たりの群集密度を約100本とし、その後、樹齢約20年となるまで成長させることを特徴とする平地におけるセンダンの育成方法を提供する。【選択図】図1
