等了几个星期,前天终于请到了传说中的生长锥!
(图是网上的,我们的比它好看~)
昨天下午趁着没课,一行人在2号楼前集合,采样去也……
第一次动手用生长锥,而且还没有使用说明书。决定先找棵材质软的树练练手——2号楼前那棵大杨树由此惨遭毒手。几个女生连钻带敲带拧,终于抽了第一个样芯,然后又琢磨怎么把样芯从钻头里取出来,用绳子拔,找棍捅,…………总之是弄出来了!
我们要钻的树都是榆树,据说材质比较硬,大家决定再找棵靶子——这次是棵小榆树,钻孔里竟然流了很多鼻涕状的水出来,恶心之余倒是起了润滑的作用。比较顺利。
然后满怀成就感跑去家属区,开始干正事。找了离我们最近的一棵大树做1号树:)钻到一定深度就开始嘎嘎地响,当时我上旁边的楼观察树高,在5楼上可以听得很清楚。响声招来不少路过的和家属楼里的人,只好不断解释,我们只是在完成任务,不会影响到树的正常生长。
准备从树干往出抽的时候,生长锥被卡在某处——进不去也出不来,类似的那种状态。折腾了一小时还没成功。无奈之下打电话向同学们求助。秦同学先到,几个人以一种极其搞笑且难以形容的姿势一起把生长锥拔了出来。1号树测验完毕!
今天继续钻树。2号树大概要钻到40多cm深,我们的生长锥一共只有40cm,还是理论值——实际上能钻到35cm就很不容易,因为有凸出来的树皮在。
计划下午继续。围观的闲人还是不少,一边还问东问西的,大概钻到十号树的时候,围观的人就会开始少了。
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