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４０ｍｇ／ＬＴｉＯ２处理甜瓜幼苗３次，可减轻ｐＨ２．５酸雨对植株的伤害。作者认为，此与ＴｉＯ２能提高甜瓜幼苗光合速率、叶绿素含量，增加过氧化氢酶活性，减少丙二醛含量，降低质膜透性，维持细胞汁ｐＨ稳定性等多重生理作用相关。
40mg / LTiO2 treatment of melon seedlings 3 times, can reduce pH2.5 acid rain on plant damage. The authors believe that this is related to the multiple physiological effects of TiO2 on increasing photosynthetic rate, chlorophyll content, increasing catalase activity, reducing malondialdehyde content, decreasing membrane permeability, and maintaining pH stability of cell juice.