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菠菜对酸雨胁迫的响应及稀土元素的作用
Authors
贵阳) 严重玲(环境地球化学国家重点实验室
付舜珍(贵州省环境保护科学研究所)
+3 more
杨先科(贵州省环境保护科学研究所)
林鹏
贵阳) 洪业汤(环境地球化学国家重点实验室
Publication date
1 January 1999
Publisher
园艺学报
Abstract
盆栽试验结果表明:酸雨胁迫下,菠菜叶片中叶绿素含量逐渐减少,a/b值逐渐减小,与酸雨pH值呈显著正相关。SOD活性变化呈单峰曲线,总体水平下降。施用稀土元素后,植株虽仍处在酸雨胁迫下,但叶绿素总量增加,a/b值增大,SOD活性总体水平增加,其变化曲线中的峰值向酸雨酸度增大的方向移动。稀土元素明显地表现出对酸雨影响菠菜的某些生理生态特征有一定的防护作用
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Last time updated on 16/06/2016