PDF(1084 KB)
Effects of Amendment on Heavy Metals in Moderately Alkaline Farmland Soil and Their Accumulation in Wheat Around Smelting Plants
LI Hongliang, FU Yuncong, YUAN Cui, ZHU Xiaolong, GUI Juan, DAI Qingyun, HE Junqiang, DENG Lin, LIU Daihuan
PDF(1084 KB)
PDF(1084 KB)
Effects of Amendment on Heavy Metals in Moderately Alkaline Farmland Soil and Their Accumulation in Wheat Around Smelting Plants
The effect of amendment 2,4,6-trimercaptotriazine trisodium (TMT) on the accumulation of heavy metals at the late growth stage of wheat in moderately alkaline farmland around the smelting plants were investigated through field experiments. The results showed that in the contaminated soil, adding w=0.10% (mass fraction) TMT55, after 60-240 days, the available cadmium (Cd) content of DTPA in soil was reduced by 18.50%-41.53% compared with that of the controlled, and the available lead (Pb) content of DTPA in soil was reduced by 21.06%-28.43%. Adding w=0.10% (mass fraction) TMT55 to the contaminated soil with available Cd content of 0.97 mg/kg, after 200 days, the Cd content of wheat root, stem and leaf decreased by 32.04%, 27.38%, and 35.39%, respectively, compared with those of the controlled; and after 240 days, the Cd content in wheat root, stem, leaf and grain decreased by 18.12%, 34.86%, 12.39% and 20.81%, respectively. Adding w=0.10% (mass fraction) TMT55 to the contaminated soil with available Pb content of 56.72 mg/kg, after 200 days, the Pb content of the wheat root, stem and leaf decreased by 26.84%, 23.84% and 29.32% compared with those of the controlled; and after 240 days, the Pb content in wheat root, stem, leaf and grain decreased by 14.34%, 46.36%, 19.29% and 42.40%, respectively. TMT55 could inhibit the accumulation of cadmium and lead in wheat at the late growth stage, and can be a potential material for the remediation of heavy metal contaminated alkaline farmland soil around smelting plants.
2,4,6-trimercaptotriazine trisodium (TMT) / around smelting plants / moderately alkaline farmland soil / amendment / wheat / cadmium / lead {{custom_keyword}} /
表1 土壤样品的微生物多样性指数 |
| Sample | Sobs | Shannon | Simpson | Ace | Chao1 | Coverage/% |
|---|---|---|---|---|---|---|
| 对照 | 1921.0±136.7a | 6.2±0.1a | 0.007±0.002a | 2242.7±127.3a | 2249.3±118.3a | 98±0.00a |
| 处理 | 1646.3±61.78b | 5.8±0.12b | 0.012±0.003a | 1906.1±66.1b | 1923.7±92.2b | 98±0.00a |
表2 土壤细菌群落功能丰度表 |
| 一级功能 | 二级功能 | C | 百分比/% | T | 百分比/% | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Metabolism | Amino Acid Metabolism | 2854091 | 10.47 | 2331140 | 10.18 | |||||||||
| Metabolism | Carbohydrate Metabolism | 2670399 | 9.80 | 2206482 | 9.64 | |||||||||
| Environmental Information Processing | Membrane Transport | 2604045 | 9.56 | 2383110 | 10.41 | |||||||||
| Genetic Information Processing | Replication and Repair | 2021780 | 7.42 | 1708886 | 7.46 | |||||||||
| Metabolism | Energy Metabolism | 1804503 | 6.62 | 1491229 | 6.51 | |||||||||
| Unclassified | Poorly Characterized | 1398465 | 5.13 | 1172485 | 5.12 | |||||||||
| Genetic Information Processing | Translation | 1301802 | 4.78 | 1122984 | 4.90 | |||||||||
| Metabolism | Metabolism of Cofactors and Vitamins | 1245312 | 4.57 | 1025830 | 4.48 | |||||||||
| Unclassified | Cellular Processes and Signaling | 1034875 | 3.80 | 871649 | 3.81 | |||||||||
| Metabolism | Lipid Metabolism | 984298 | 3.61 | 804376 | 3.51 | |||||||||
| Metabolism | Nucleotide Metabolism | 925572 | 3.40 | 774079 | 3.38 | |||||||||
| Cellular Processes | Cell Motility | 911201 | 3.34 | 863550 | 3.77 | |||||||||
| Metabolism | Xenobiotics Biodegradation and Metabolism | 778081 | 2.86 | 593932 | 2.59 | |||||||||
| Unclassified | Genetic Information Processing | 735318 | 2.70 | 615411 | 2.69 | |||||||||
| Genetic Information Processing | Folding, Sorting and Degradation | 708558 | 2.60 | 616715 | 2.69 | |||||||||
| Unclassified | Metabolism | 700475 | 2.57 | 570276 | 2.49 | |||||||||
| Metabolism | Glycan Biosynthesis and Metabolism | 627282 | 2.30 | 536108 | 2.34 | |||||||||
| Environmental Information Processing | Signal Transduction | 617938 | 2.27 | 531786 | 2.32 | |||||||||
| Genetic Information Processing | Transcription | 605085 | 2.22 | 496863 | 2.17 | |||||||||
| 一级功能 | 二级功能 | C | 百分比/% | T | 百分比/% | |||||||||
| Metabolism | Metabolism of Terpenoids and Polyketides | 580423 | 2.13 | 467502 | 2.04 | |||||||||
| Metabolism | Enzyme Families | 552628 | 2.03 | 462769 | 2.02 | |||||||||
| Metabolism | Metabolism of Other Amino Acids | 499610 | 1.83 | 390798 | 1.71 | |||||||||
| Metabolism | Biosynthesis of Other Secondary Metabolites | 279783 | 1.03 | 227262 | 0.99 | |||||||||
| Cellular Processes | Cell Growth and Death | 162926 | 0.60 | 131388 | 0.57 | |||||||||
| Human Diseases | Infectious Diseases | 116452 | 0.43 | 90288 | 0.39 | |||||||||
| Organismal Systems | Endocrine System | 109991 | 0.40 | 90806 | 0.40 | |||||||||
| Cellular Processes | Transport and Catabolism | 89898 | 0.33 | 70245 | 0.31 | |||||||||
| Human Diseases | Neurodegenerative Diseases | 86995 | 0.32 | 68964 | 0.30 | |||||||||
| Environmental Information Processing | Signaling Molecules and Interaction | 46054 | 0.17 | 34673 | 0.15 | |||||||||
| Organismal Systems | Environmental Adaptation | 40935 | 0.15 | 35208 | 0.15 | |||||||||
| Human Diseases | Cancers | 40283 | 0.15 | 26719 | 0.12 | |||||||||
| Human Diseases | Metabolic Diseases | 23895 | 0.09 | 18772 | 0.08 | |||||||||
| Organismal Systems | Nervous System | 22358 | 0.08 | 17221 | 0.08 | |||||||||
| Organismal Systems | Immune System | 15163 | 0.06 | 12411 | 0.05 | |||||||||
| Organismal Systems | Digestive System | 13605 | 0.05 | 8702 | 0.04 | |||||||||
| Organismal Systems | Circulatory System | 11550 | 0.04 | 10397 | 0.05 | |||||||||
| Human Diseases | Immune System Diseases | 10862 | 0.04 | 7727 | 0.03 | |||||||||
| Organismal Systems | Excretory System | 10817 | 0.04 | 8228 | 0.04 | |||||||||
| Human Diseases | Cardiovascular Diseases | 4608 | 0.02 | 1683 | 0.01 | |||||||||
| Cellular Processes | Cell Communication | 54 | 0.00 | 36 | 0.00 | |||||||||
| Organismal Systems | Sensory System | 18 | 0.00 | 12 | 0.00 | |||||||||
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PDF(1084 KB)
表1 土壤样品的微生物多样性指数
图1 不同处理土壤样品在门分类水平上细菌组成图2 不同处理土壤样品在属分类水平上细菌组成图3 垃圾堆放对土壤细菌群落门(A)和属(B)水平的差异分析图4 不同处理土壤细菌在属分类水平上的Venn图表2 土壤细菌群落功能丰度表/
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