纳米沸石对大白菜生长、抗氧化酶活性及镉形态、含量的影响  

Effect of Nano Zeolite on Growth, Activity of Antioxidant Enzyme, and Chemical Fractions and Concentration of Cd in Chinese Cabbage

作　　者：秦余丽 熊仕娟 徐卫红[1] 赵婉伊[1] 王卫中[1] 陈永勤[1] 迟荪琳 陈序根 张进忠[1] 熊治庭[2] 王正银[1] 谢德体[1] QIN Yu-li XIONG Shi-juan XU Wei-hong ZHAO Wan-yi WANG Wei-zhong CHEN Yong-qin CHI Sun-lin CHEN Xu-gen ZHANG Jin-zhong XIONG Zhi-ting WANG Zheng-yin XIE De-ti(College of Resources and Environment, Southwest University, Chongqing 400715, China College of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, China)

机构地区：[1]西南大学资源环境学院,重庆400715 [2]武汉大学资源环境学院,武汉430079

出　　处：《环境科学》2017年第3期1189-1200,共12页Environmental Science

基　　金：现代农业产业技术体系建设专项(Nycytx-25);国家自然科学基金项目(20477032);国家科技支撑计划项目(2007BAD87B10)

摘　　要：通过土培试验研究了纳米沸石(NZ)和普通沸石(OZ)对2个品种白菜生长、抗氧化酶活性,镉形态和含量的影响.结果表明,施用沸石明显提高了大白菜地上部和根部过氧化物酶(POD)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)活性,使大白菜地上部、植株总干重分别增加了4.5%~96.5%、3.4%~88.4%.施用纳米沸石和普通沸石有效降低了2个品种大白菜地上部和根部镉含量,且降低幅度随沸石施用量的增加而增加.低镉(1 mg·kg^(-1)Cd)条件下,山东四号和新晋菜三号大白菜可食部位(地上部)镉含量较对照(Cd_1+Z_0)分别降低了1.0%~75.0%、19.5%~68.9%(除Cd_1+OZ_5/OZ_(10)处理).高镉水平(5 mg·kg^(-1)Cd)条件下,山东四号和新晋菜三号大白菜可食部位(地上部)镉含量较对照(Cd_5+Z_0)分别降低了7.2%~53.2%(除Cd_5+OZ_(10)处理)、0.7%~63.0%.与普通沸石相比较,纳米沸石处理大白菜可食部位(地上部)镉含量降低10.5%~65.7%.在镉污染土壤上(1 mg·kg^(-1)和5 mg·kg^(-1)Cd),施用纳米沸石和普通沸石使山东四号品种大白菜可食部位(地上部)镉提取总量分别降低了12.4%~68.8%和13.2%~55.6%(除Cd_5+OZ_5处理),使新晋菜三号大白菜可食部位(地上部)镉提取总量分别降低了9.4%~71.5%和3.1%~38.7%(除Cd_1+OZ_5处理),且随着施用量的增加,降低幅度更大.Pot experiment was carried out to investigate the influence of nano zeolite（ NZ） and ordinary zeolite（ OZ） on the growth,activities of antioxidant enzyme,Cd fraction and Cd concentration in two varieties of Chinese cabbage. The results showed that the activities of SOD,CAT and POD in the shoot and root of two varieties increased,and the dry weight of shoot and the total dry weight of Chinese cabbage increased by 4. 5%-96. 5% and 3. 4%-88. 4%,respectively. The application of zeolite effectively reduced the Cd concentration of shoot and root in the two varieties of Chinese cabbage,and the reduction range increased with the increase of the application amount of zeolite. Under the low Cd condition（ 1 mg·kg-（-1）Cd）,the Cd concentration of edible parts（ shoots） in SD4 variety and XJC3 variety decreased by 1. 0%-75. 0% and 19. 5%-68. 9%（ except the Cd1＋ OZ5/ OZ（10）processing）,respectively.Under the high Cd condition（ 5 mg·kg-（-1）Cd）,the Cd concentration of the edible parts（ shoots） in SD4 variety and XJC3 variety decreased by 7. 2%-53. 2%（ except Cd5＋ OZ（10）processing） and 0. 7%-63. 0%,respectively. The Cd concentrations of the edible parts（ shoots） in tow varieties of Chinese cabbage in the nano zeolite treatments decreased by 10. 5%-65. 7% compared with the ordinary zeolite treatments. In Cd contaminated soils（ 1 mg·kg-（-1）and 5 mg·kg-（-1）Cd）,） the total extraction amount of Cd in the edible parts（ shoots） of SD4 variety reduced by 12. 4%-68. 8% and 13. 2%-55. 6%（ except of Cd5＋ OZ5processing）,and the total extraction amount of Cd in the edible parts（ shoots） of XJC3 variety reduced by 9. 4%-71. 5% and 3. 1%-38. 7%（ except of Cd1＋OZ5processing）,respectively. The application amount of nano zeolite（ NZ） and ordinary zeolite（ OZ） was more,the reduction range of the total extraction amount of Cd in the edible parts（ shoots） of two varieties of Chinese cabbage was greater.

关 键 词：纳米沸石 抗氧化酶 镉形态及含量 大白菜 

分 类 号：X171[环境科学与工程—环境科学]