| 戚兴超,刘艳丽,焦安昊,贾继文,张民,李成亮.离子型表面活性剂对菠菜生长与土壤酶活性的影响[J].农业环境科学学报,2016,35(6):1048-1055. |
| 离子型表面活性剂对菠菜生长与土壤酶活性的影响 |
| Effects of ionic surfactants on spinach growth and soil enzyme activities |
| 投稿时间：2016-01-23 |
| DOI：10.11654/jaes.2016.06.005 |
| 中文关键词: 生物量 抗氧化酶 土壤酶 表面活性剂 |
| 英文关键词: biomass antioxidant enzyme soil enzyme ionic surfactant |
| 基金项目:中国博士后科学基金项目(2013M540562);高等学校博士学科点专项科研基金项目(2012370212003) |
| 作者 | 单位 | E-mail | | 戚兴超 | 土肥资源高效利用国家工程实验室, 山东农业大学资源与环境学院, 山东 泰安 271018 | | | 刘艳丽 | 土肥资源高效利用国家工程实验室, 山东农业大学资源与环境学院, 山东 泰安 271018 | | | 焦安昊 | 山东农大肥业科技有限公司, 山东 泰安 271000 | | | 贾继文 | 土肥资源高效利用国家工程实验室, 山东农业大学资源与环境学院, 山东 泰安 271018 | | | 张民 | 土肥资源高效利用国家工程实验室, 山东农业大学资源与环境学院, 山东 泰安 271018 | | | 李成亮 | 土肥资源高效利用国家工程实验室, 山东农业大学资源与环境学院, 山东 泰安 271018 | chengliang_li11@163.com |
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| 中文摘要: |
| 为评价离子型表面活性剂对土壤生态的安全性,利用盆栽试验,研究了十六烷基三甲基溴化铵(Cetyltrimethyl ammonium bromide,CTAB)和十二烷基硫酸钠(Sodium dodecyl sulfate,SDS)对菠菜生物量、叶片抗氧化酶和土壤酶活性的影响。结果表明:CTAB和SDS都对菠菜的生长表现出低浓度促进高浓度抑制,其对菠菜生长造成抑制的临界浓度分别是500、1000 mg·kg-1。各CTAB和SDS浓度处理都显著增加了叶片超氧化物歧化酶(SOD)的活性。随着CTAB浓度增加,SOD活性呈现先增加后下降的趋势;SDS处理下,在50~750 mg·kg-1浓度范围内SOD活性无显著变化,浓度>750 mg·kg-1 SOD活性显著降低。CTAB处理下,叶片过氧化氢酶(CAT)活性主要受到促进作用,SDS处理下CAT活性先受到促进后受到抑制。除个别浓度外,CTAB和SDS都使叶片过氧化物酶(POD)的活性降低,不同浓度之间POD活性变化规律性不强。各CTAB浓度处理下,土壤脱氢酶、脲酶、蔗糖酶和中性磷酸酶的活性几乎都受到抑制;各SDS浓度处理下,土壤脱氢酶和蔗糖酶的活性都不同程度的增加,土壤脲酶和中性磷酸酶的活性,除个别情况外都受到抑制。CTAB和SDS都在一定程度上表现出土壤生态毒性,CTAB的毒性要大于SDS。 |
| 英文摘要: |
| Ionic surfactants may pose risks to plants and soil microbes after entering soil. Here cetyltrimethyl ammonium bromide(CTAB) and sodium dodecyl sulfate(SDS) were used to investigate their effects on spinach biomass, and leaf antioxidant enzyme and soil enzyme activities in pot experiment. Results indicated that both CTAB and SDS promoted spinach growth at lower concentrations but showed inhibition at higher rates. The thresholds for the inhibitory effect of CTAB and SDS on spinach growth were 500 mg·kg-1 and 1000 mg·kg-1, respectively. Superoxide dismutase(SOD) activity depended on the surfactant concentrations. As CTAB concentration increased, the activity of SOD increased gradually and then decreased noticeably. However, the activity of SOD did not differ from the control at SDS less than 750 mg·kg-1, but decreased significantly at higher concentrations. Basically, CTAB and SDS inhibited catalase(CAT) activity. The activity of peroxidase(POD) was suppressed by CTAB or SDS under most cases. Besides, the activities of soil dehydrogenase, urease, sucrose, and neutral phosphatase were almost reduced or restrained by CTAB. However, SDS had the different effects on these enzymes. It promoted soil dehydrogenase and surcase activities, but inhibited soil urease and neutral phosphatase. Generally, both CTAB and SDS showed certain of toxicity to soil ecology, with CTAB being more harmful than SDS. These results would provide some references for assessing and managing the soil ecological security of ionic surfactants. |
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