怎样设置荫棚?
荫棚是花卉栽培中不可缺少的设备,可保证花卉不道受日光直射而灼伤,以减少蒸腾,降低温度。荫棚要选择高燥避风处架设。荫棚主要由棚架和棚顶组成。
①棚架:荫棚有高低之分,高者高度可达3米以上,低的约2米,有的临时性荫棚仅高1米左右。棚架材料可用钢材、水泥或竹子。
临时性的荫棚,一般用竹子架设,省钱又方便。家庭养花不多的,也可用树枝代替。
②棚顶:棚顶的用料有芦帘、竹帘、竹片、帆布、塑料板、树枝等。
建造的荫棚不宜太宽,否则荫棚中间的盆花,会由于通风不良或过于阴湿而影响生长。一般每排荫棚的宽度以3米左右为宜。如建两排以上的荫棚时,每排中间要留1米左右的空隙,以利通风透光。另外,荫棚要东西方向建造,这样的蔽荫效果才好。建造荫棚时立柱一定要埋牢固,相互连接处一定要紧牢可靠,棚架不能左右摆动,以免大风刮倒棚架,砸坏花盆,压伤花卉植物,造成损失。
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