水曲柳山地垄作与平床育苗生长效果试验初报简

在甘井子林场进行了水曲柳（Fraxinus mandschurica）山地育苗垄作与平床育苗生长效果的对比试验，结果表明：垄作育苗当年平均苗高83 cm ，地径0．96 cm ，主根长38 cm ，侧根长27 cm ，侧根平均7条，均高于平床育苗；垄作育苗和平床育苗在生长量、地径粗度和侧根数量上形成明显的差异；垄作育苗由于根茎粗壮，侧根条数多，当年造林成活率和造林保存率均比平床育苗成效显著，均构成了显著差异。山地垄作育苗效果要明显好于平床育苗效果。

Growth Effect of Fraxinus mandschurica with Ridge Culture and Level Sowing in Hilly Area

The comparative experiments of growth effect of Fraxinus mandschurica with ridge culture and level so-wing were conducted in Ganjingzi Forest Farm .Result shows that ：in the same year ,average seedling height in the ridge are 83 cm ,ground diameter being 0 .96 cm ,root length being 38 cm ,the length of the lateral root being 27 cm , the average lateral number being seven ,above values are all higher than that of the level sowing .Ridge nursery ＆level sowing have significant differences in growing ,ground diameter ＆ the number of lateral root ;since ridge nurs-ery have the characteristics of stout rhizome and large lateral roots ,the effect of the afforestation survival rate ＆ af-forestation preservation rate are all remarkable than that of level sowing （all constitute significant differences） .The effect of mountain ridge nursery is significantly optimal than that of the level sowing .