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9663183 
Journal Article 
生物质炭对邻苯二甲酸二(2-乙基己基)酯污染土壤中黄瓜幼苗生理特性的影响 
Li, Z; Li, R; Mu, J; Yang, Z; Sun, S; Yan, Y; Wang, G 
2020 
1 
Zhiwu Shengli Xuebao
ISSN: 2095-1108 
Science Press 
56 
1 
73-82 
Chinese 
In the present study, the cucumber ‘Jinyan No.1’ as test material, we investigated the effects of biochar on physiological characteristics of cucumber seedlings in soils contaminated with diethyl hexyl phthalate (DEHP). The results showed that biochar could remit the damage of DEHP on cell membrane, and the effects of 1% and 2% biochar were better than that of 0.5% biochar. Biochar could improve the activity of SOD and contents of chlorophyll a, chlorophyll b and carotenoid, reduce activities of POD and APX in leaves. The most significant influence on CAT activity was 0.5% biochar. Treatment with biochar had no significant effects on chlorophyll fluorescence parameters Fv/Fm. While, 0.5% and 1% biochar treatment can significantly relieve the effects of DEHP pollution on qp, NPQ and ΦPSII. Grey correlation analysis indicated that biochar and DEHP firstly influenced the photosynthetic pigment synthesis, then affected NPQ and antioxidant enzyme system, finally caused changes of cell membrane stability and chlorophyll fluorescence. Comprehensive analysis showed the effects of 1% biochar treatment on cucumber seedlings in DEHP contaminated soil was better than 0.5% and 2% biochar. At the same time, risk assessment on crops was very necessary when biochar was applied to farmland. © 2020, Science Press. All right reserved. 
Antioxidant enzyme; Biochar; Chlorophyll fluorescence; Cucumber; Diethyl hexyl phthalate (DEHP)