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艾比湖流域盐碱尘沉降对棉花叶片的危害[J]
Authors
中国科学院大学
中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室
+5 more
内蒙古大学环境与资源学院
刘东伟
吉力力·阿不都外力
姜逢清
张兆永
Publication date
1 January 2015
Publisher
Abstract
通过野外定位监测实验,研究了艾比湖流域盐碱尘对棉花叶片光合特性、盐分含量以及叶片细胞生理功能的影响。结果表明:盐碱尘沉降对棉花叶片的盐分离子含量造成影响,导致叶片Na+、Cl-和SO42-等有害离子含量增多,K+等营养元素含量减少,影响棉花叶片营养吸收,造成叶片遭受盐分离子毒害;盐碱尘沉降显著阻塞棉花叶片气孔,影响叶片净光合速率、呼吸速率、光能利用率、水分利用率、蒸腾作用和叶片温度;盐碱尘沉降造成棉花叶片细胞丙二醛含量增加,叶绿素、类胡萝卜含量减少;棉花叶片通过增加可溶性糖、脯氨酸含量来调节细胞溶剂的损失,通过增强抗氧化系统酶的活性来清除活性氧等有害物质,减少损伤,维持正常的生理功能
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016