“小老树”有的地方又称为“蹲山猴”,主要是人们对树木生长的客观规律认识不足,违背“适地适树”的原则,或造林前不整地,土壤板结,造林后又不抚育和保护,使林地杂草丛生,牲畜破坏,久而久之即形成了“小老树”。小老树的形态特征:高生长仃滞,树冠大,主侧枝不明显,病虫害多,幼龄树呈现老龄树状态,影响树木成材。通常采用的几点改造小老树的方法是:一、培土:在行内挑沟,沟宽、深各40厘米,将挖出的土培在树木根际,促使小老树复壮。二、平茬:杨树小老树在早春土壤解冻前进行平茬更新,使之萌发出新 In some places, “little old tree” is also called “squatting monkey”, mainly because people do not have enough understanding of the objective laws of tree growth, violate the principle of “suitable tree planting”, or unregulated before afforestation, soil compaction, afforestation Not to nurture and protect, so that forest overgrown, livestock destruction, over time that formed a “small old tree.” Small old tree morphological characteristics: high growth Ding stagnation, large canopy, the main side of the branches is not obvious, pests and diseases and more, young trees show the state of aging trees, affecting the trees become useful. Some commonly used methods to transform small old trees are: First, earthwork: in the line to pick ditches, ditch width, depth of 40 cm, the dug out of the soil in the rhizosphere soil, prompting young trees rejuvenation. Second, stubble: Poplar trees in the early spring soil thaw stubble update, so that the new germination of a new