马尾松是我国南方十四省主要速生用材树种,但由于管理粗放和掠夺式修剪,致使其优良特性没有充分发挥;造成“慢生、矮小、弯曲、多节疤,难成材、少丫柴”的严重低产局面,针对此情况,我们参照国外有关资料,借鉴果树修剪原理,总结出马尾松科学整枝“十字法”:即“一改、三剪留、四不、三注意”。一改:改刀修为用枝剪整枝,这样,伤口小而圆滑,易愈合,避免了用刀修一扫光 Masson pine is the main species of quick-growing timber in 14 provinces in southern China. However, due to extensive management and predatory pruning, the excellent characteristics of Pinus massoniana have not been brought into full play. Masson’s disease is slow, short, curved, In view of this situation, we refer to the relevant foreign information, learn from the pruning of fruit trees, summed up the Masson Pine science pruning “cross method”: “a change, three left, four not three attention.” A change: change the knife to cut the branches with pruning, so that the wound is small and sleek, easy to heal, to avoid using a knife to clean up the light