稀土元素L_a对酸雨损伤蜡梅的影响

Effect of Rare Earth La on the Wintersweet Harmed by Simulated Acid Rain.

稀土元素Ｌａ对酸雨损伤蜡梅的影响周青黄晓华王冬燕邵爱华吴波（苏州铁道师范学院，２１５００９）ＥｆｅｃｔｏｆＲａｒｅＥａｒｔｈＬａｏｎｔｈｅＷｉｎｔｅｒｓｗｅｔＨａｒｍｅｄｂｙＳｉｍｕｌａｔｅｄＡｃｉｄＲａｉｎ．ＺｈｏｕＱｉｎｇ，ＨｕａｎｇＸｉａｏｈ...

When 15mg·L -1 LaCl 3 was used to spray wintersweet three times ,it reduced the damage effect of simulated acid rain at pH 2.5. It was considered that the effect of LaCl 3 on the wintersweet was realted to following factors.(1)Raising photosynthetic rate and chlorophyll content;(2)increasing catalase activity;(3)decreasing malondialdehyde content; (4)reducing cell membrane permeability and (5)keeping stability of pH value of cell juice.