本方法是在幼龄板栗树每年落叶前（９月中旬至下旬）将林木抗寒剂原液的２－５倍液喷施到板栗树叶表面，以叶面见滴水为度。本方法可提高板栗树的抗寒能力，保证幼龄树安全越冬，且操作简单，便于推广应用板栗幼树的抗寒方法 The method is that young chestnut trees are sprayed on the surface of chestnut leaves twice a year before the deciduous (mid-September to late) spray of the forest cold-resistant agent stock solution. The method can improve the cold resistance of the chestnut tree, ensure that the young tree is safe and overwinter, and the operation is simple, which is convenient for popularizing and applying the cold-resistant method of the chestnut young tree