日本落叶松是豫西中山区主要发展树种之一,年需苗量大,为此,我们干1989～1991年采用扦插繁殖,以扩大良种苗生产。1 试验区基本情况试验地设在老君山林场伊源林区,海拔高1230m,年降水量1300mm,平均气温11.0℃,空气相对湿度70%;无霜期140天。试验区周围为森林气候。2 试验材料插条均采自6年生,生长健壮、无病虫害的中上部的外围当年生粗壮枝。为防止嫩枝失 Larix kaempferi is one of the main species of tree species in Zhongshan District of western Henan Province, with a large annual volume of seedlings. Therefore, we conducted cutting propagation from 1989 to 1991 to expand the production of good seedlings. The experimental area is basically located in Laoyun Mountain forestry field Yiyuan forest, elevation 1230m, annual precipitation 1300mm, average temperature 11.0 ℃, air relative humidity 70%; frost-free period 140 days. Around the experimental area is the forest climate. 2 test material cuttings are collected from 6-year-old, robust growth, no pests and diseases in the upper part of the periphery when robust stout. To prevent the loss of young shoots