| Autor: |
Qin YL; College of Resources and Environment, Southwest University, Chongqing 400715, China., Xiong SJ; College of Resources and Environment, Southwest University, Chongqing 400715, China., Xu WH; College of Resources and Environment, Southwest University, Chongqing 400715, China., Zhao WY; College of Resources and Environment, Southwest University, Chongqing 400715, China., Wang WZ; College of Resources and Environment, Southwest University, Chongqing 400715, China., Chen YQ; College of Resources and Environment, Southwest University, Chongqing 400715, China., Chi SL; College of Resources and Environment, Southwest University, Chongqing 400715, China., Chen XG; College of Resources and Environment, Southwest University, Chongqing 400715, China., Zhang JZ; College of Resources and Environment, Southwest University, Chongqing 400715, China., Xiong ZT; College of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, China., Wang ZY; College of Resources and Environment, Southwest University, Chongqing 400715, China., Xie DT; College of Resources and Environment, Southwest University, Chongqing 400715, China. |
| Abstrakt: |
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 (1mg·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 Cd 1 +OZ 5 /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 Cd 5 +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 Cd 5 +OZ 5 processing), 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 Cd 1 +OZ 5 processing), 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. |
