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夏季兰花的管理

Colour_
2017-08-09

夏季#兰花 的管理:

1、 提高兰房之通风:开启兰房内所有窗户,让空气充分对流,并启动所有之通风扇,兰房上层之风扇设定为排气将热空气排出,下层之风扇设定为送风将凉爽空气抽入,确实做到让兰房内之空气充分对流,如此一来,即便兰房内之温度高于35℃~40℃,也毋需担心发生倒草。

2、 保持兰房之干爽:许多新手兰友因担心夏季的高温对兰草造成伤害,故常于夏天在兰叶上喷水或使用湿设备,期使提高兰房的相对湿度以便达到降温之效果,爱之适足以害之,结果反遭致兰叶黑斑点点甚或引起软腐倒草。夏季虽然气温高,湿度也相对地比其它季节高,这时节如果增加兰房的相对湿度,高温高湿反倒使兰房成为病菌迅速滋生的场所,在空气对流不完善之情况下,由于蒸腾作用,兰草容易因此罹病绝亡。而且个人以为兰草所需之湿度不必然是环境中之相对湿度,应该是兰草生长之兰盆内的绝对湿度,因此,保持兰房内或养兰处所之干爽,绝对是帮助兰草过度酷热夏季最为重要的关键。

3、 严格控管浇水时机:夏季是兰草生长复壮与孕育花芽分化的时期,这期间对兰草之浇水时机应严格控管,白昼气温太高、植料不干都不是浇水的好时机。个人认为夏天浇水应在晚间气温稍低时进行,因为兰草在温度高于30℃时即进入休眠状态,此时给水,兰草无法进行吸收作用,反而会积涝于兰盆内致使兰根溃烂造成空根,也容易因此引起软腐倒草,导致无可挽回的遗憾。再则,夏季严格控水让兰盆内保持稍微干燥,可以因此诱使兰草自身产生危机感进而促使花芽分化。所以,严格控管水分的给予和浇水时机亦是夏季兰草管理之重要课题。
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