在美国的东南地区,火炬松树苗的栽植季节紧在起苗季节后的三个月。为避免由于造林时起苗而使树苗绽出新芽引起栽植苗的品质降抵,在树苗栽植前,可以早起苗并贮放到冷藏室。火炬松树苗起苗后的生存依赖于从苗圃起苗的日期和贮藏的持续时间,冷藏具有多种变化的效果。当用根生长势和标准状况下测量的新根生长,来评价火炬松和 In the southeastern United States, the planting season of loblolly pine seedlings is close to three months after the seedling season. In order to avoid the sprouting of young trees caused by sprouting of young trees, the quality of planting seedlings will be reduced. Before the planting of saplings, they can be raised early and stored in the freezer. The survival of loblolly pine seedlings depends on the date of emergence from the nursery and the duration of storage, and refrigeration has a variety of effects. The loblolly pine and apples were evaluated with root growth potential and new root growth measured under standard conditions