我们在城郊公社八宝大队苗圃,经过三年试验,落叶松播种育苗覆盖,改用二份木屑,一份细沙,一下一上,分层镇压的做法,收到明显效果。现介绍如下。一、具体做法和结果 1982年春用常规处理的落叶松种子进行播种,先盖0.3cm厚木屑。用木滚镇压,再覆0.15cm细河沙,最后镇压一次。并用常规覆盖(不加木屑)作对照。于当年6月25日和10月12日分别做了幼苗 After eight years of trial, we planted nursery larch sowing and replaced it with two parts of sawdust and a fine sand. Now introduced as follows. First, the specific practices and results 1982 spring larch seeds with conventional treatment of sowing, first cover 0.3cm thick sawdust. Wood rolling repression, and then covered 0.15cm fine sand, the last crackdown. And with conventional coverage (without wood chips) as a control. On June 25 and October 12, seedlings were made respectively