如何搭建弧形棚?

2025-03-16 07:16:41
推荐回答(1个)
回答1:

(1)埋立柱弧形棚前后立柱一样高,育苗床立柱全长130厘米,移栽床立柱全长150厘米,在床的两边每隔160厘米左右埋一对立柱,前后对正,立柱入土深度50厘米,因此从床面算起育苗床棚高80厘米,移栽床棚高100厘米,截立柱顶时,凹口方向是顺床方向(一面坡棚凹口是横床方向,这样放顺杆牢固)。(2)绑架子弧形透光棚先上顺杆,顺杆长3.5米或5.5米,大头直径7~10厘米,小头直径3~4厘米,每10米长的参床需3.5米长的杆9根,或5.5米长的杆子6根。先将两根顺杆分别放在参床两边的立柱上端凹口内,顺杆都是大头朝上,细头朝下,床下头最后一根杆大头朝下,接头要绑牢,前后顺杆都绑好后,在两条顺杆上绑横梁,每对立柱处都绑一根横梁。横梁长140~150厘米,直径3~4厘米,最好是松木杆,两头制成3厘米×3厘米或4厘米×4厘米的方形,每10米长的参床需横梁6根。绑好横梁后,在横梁上方的中间位置再绑上一根顺杆。这种棚盖中部比两边顺杆处高出10~12厘米,上帘后呈弧形,故称弧形棚。

图9 弧形棚(3)上帘子编帘子的方法同一面坡透光棚,只是帘子的规格稍有不同。帘宽200厘米,长500厘米,帘子稀密视地块而异,苫双层帘,阳坡间隙为5厘米,阴坡为6~7厘米;若用单层帘其间隙阳坡为3厘米,阴坡为5厘米。上帘子的方法是将帘子横放在棚架上,顺床滚动,单层帘塑料布铺在架上,帘子覆盖其上,用双层帘则将塑料膜夹在两层帘子之间,用20号铅丝将帘子和薄膜绑牢(图9)。

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