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作 者 ：周青, 黄晓华, 王东燕, 曹玉华, 宁允叶, 金琎

期 刊 ：植物生态学报 1999年 23卷 2期 页码：186-191

关键词：钙；甜瓜幼苗；酸雨伤害；防护效应；

Keywords:Calcium, Muskmelon Seedling, Acid rain, Protective effect,

摘 要 ：本文研究了钙对酸雨伤害甜瓜幼苗的影响。30mmol/L CaCl2处理甜瓜幼苗2次，可明显减轻pH2.5酸雨对甜瓜幼苗的酸致损伤。实验结果显示，此与钙能提高甜瓜幼苗光合速率、叶绿素含量，增加CAT活性与叶片Ca2+含量，减少MDA含量，降低质膜透性，维持细胞汁pH值稳定性等多重生理生态效应有关。

Abstract:The protective effect of calcium on muskmelon seedling harmed by acid rain was studied. When muskmelon seedlings were sprayed with 30 mmol/L CaCl2 two times (once every 24h) ,the damage to muskmelon seedlings by acid rain at pH2.5 were reduced. The protective effect was because that CaCl2 raised photosynthetic rate, chlorophyll content and Ca2+ content, increased catalase activity, decreased malondialdehyde content, reduced cell membrane permeability and kept stability of cell juice pH value of muskmelon seedlings, etc.

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