| 施磷对吊兰修复镉污染土壤及土壤酶活性的影响 |
| |
| 引用本文： | 潘芳慧,张晓玮,王友保.施磷对吊兰修复镉污染土壤及土壤酶活性的影响[J].水土保持学报,2018,32(3):346-351. |
| |
| 作者姓名： | 潘芳慧 张晓玮 王友保 |
| |
| 作者单位： | 安徽师范大学生命科学学院;安徽师范大学生物环境与生态安全安徽省高校省级重点实验室 |
| |
| 基金项目： | 国家自然科学基金项目（31070401）；安徽省高校自然科学基金重大项目；重要生物资源保护与利用研究安徽省重点实验室基金资助项目 |
| |
| 摘 要： | 选用吊兰进行室内盆栽,研究在Cd污染土壤中,施用不同剂量磷肥对吊兰生理指标、土壤酶活性等的影响,为合理施用磷肥,提高Cd污染土壤的植物修复效果提供参考依据。结果表明:吊兰在100mg/kg的Cd污染土壤中能正常生长,施P对吊兰的叶绿素、细胞膜透性、抗氧化酶活性影响显著(p0.01),表现为低浓度促进,高浓度抑制作用。当施磷量为200mg/kg时,叶绿素含量、CAT酶活性最大,外渗电导率和MDA含量最低,POD酶活性开始上升,说明施磷能使吊兰的细胞膜受害程度最低,抗氧化作用增强。同时,施P有利于改善Cd污染土壤的酶系统,对过氧化氢酶、脲酶的活性表现为低浓度促进、高浓度抑制,对蔗糖酶的活性表现相反,对磷酸酶的活性表现抑制作用;且200mg/kg的磷处理时,过氧化氢酶、脲酶的活性最高,蔗糖酶的活性最低。4种土壤酶活性均与P浓度呈高度相关性(p0.05),相关性为脲酶过氧化氢酶蔗糖酶磷酸酶。
|
| 关 键 词： | 磷肥 镉污染土壤 吊兰 土壤酶 植物修复 |
| 收稿时间： | 2017/11/13 0:00:00 |
Effects of Phosphate Fertilizer on Phytoremediation of Chlorophytum comosum and Soil Enzyme Activity in Cd-contaminated Soils |
| |
| PAN Fanghui,ZHANG Xiaowei,WANG Youbao.Effects of Phosphate Fertilizer on Phytoremediation of Chlorophytum comosum and Soil Enzyme Activity in Cd-contaminated Soils[J].Journal of Soil and Water Conservation,2018,32(3):346-351. |
| |
| Authors: | PAN Fanghui ZHANG Xiaowei WANG Youbao |
| |
| Institution: | 1. College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000;2. Anhui Key Laboratory of Biotic Environment and Ecological Safety, Anhui Normal University, Wuhu, Anhui 241000 |
| |
| Abstract: | The effect of phosphate fertilization on the growth of Chlorophytum comosum and soil enzyme activities in Cd-contaminated soils were investigated. The results showed that C. comosum was able to grow well in Cd-contaminated soils contained 100 mg/kg Cd. The appropriate addition of P fertilization was capable of distinctly improving chlorophyll content, cell membrane permeability and antioxidase activities of C. comosum (p<0.01). The chlorophyll content, cell membrane permeability and antioxidase activities of C. comosum were promoted by low P level fertilization and inhibited by high P level fertilization. Both the chlorophyll content and the CAT activity increased to the maximum at 200 mg/kg of P. Election Conductivity and MDA content dropped to the minimum value at the same time. The POD activity started to rise when the P content were at 200 mg/kg. The results indicated that P addition could reduce the degree of damage to the cell membrane to the lowest level, and significantly enhance antioxidation. Simultaneously, the soil enzyme system in Cd-contaminated soils could also be improved by using phosphate fertilizer. The activities of catalase and urease were enhanced at low P content while they were decreased at high P content. The urease activity showed the opposite trend of the catalase and urease activities. The phosphatase activity was inhibited. Besides, the activities of catalase and urease were elevated to the maximum values while the sucrase activity was decreased to the minimum value at 200 mg/kg of P content. Moreover, the four soil enzyme were highly correlated with P concentration (p<0.05) and the correlation sequence of the four soil enzymes was urease > catalase > sucrose > phosphatase. |
| |
| Keywords: | phosphate fertilization Cd-contaminated soils Chlorophytum comosum soil enzyme phytoremediation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《水土保持学报》浏览原始摘要信息 |
| 点击此处可从《水土保持学报》下载免费的PDF全文 |
|
