温室环境对花卉有何影响?
①温室环境的小气候特点是:受自然界特别是外界的气候条件变化的影响小,它的气候环境基本上是在人为控制条件下造成的。因温室是一个封闭性的地点,其室内环境与外界相比,室内呈通风状况不良、温度较室外高、湿度增大、温差相对较小的环境。
②温室条件下供花卉进行呼吸作用的二氧化碳供给不足。
③长期处于温室的花卉,虽然生长很快,枝叶长势良好,但其对外界环境的抵抗力和抗逆能力下降,枝叶过于纤细娇弱,花芽分化及花蕾形成晚,开花较少且花形不良,所结果实少而小。
④温室条件下不通风的环境有利于病虫害的产生和蔓延,使病虫害猖獗难以控制。
⑤温室特别是单面透光的温室,其阳光射人大多在同一方向,容易造成花卉植物向光性生长,使其出现弯斜或扭曲,降低了观赏价值。
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