1．树形不当，年年短截过重目前，一般幼树园栽植密度为3米X4米或2米X4米。在栽植密度加大的情况下，有些果园仍采用稀植大冠的树形和修剪方法，连年对一年生枝短截过重，造成枝条过密，树势过旺，通风透光不良，致使幼树适龄不能结果。对这类构应采取“疏缓为主，稳定树势”的 1. Improper tree shape, short year after year Overweight At present, the general planting density of saplings is 3 meters X4 meters or 2 meters X4 meters. In the case of increased planting density, some orchards are still using the crown and pruning method of planting crown, year after year on the short branch of the tree branches too heavy, resulting in branches too dense, shrubs over, poor ventilation and light, resulting in young Tree age can not result. For such structures should be taken to “ease the main stability of the tree.”