| 彭语童,杨涛,张建利,溥丽华,荣大军,陈芃利.“生物炭—生石灰”对西番莲种植土壤重金属Cd的阻控效应[J].中国南方果树,2024,53(6): |
| “生物炭—生石灰”对西番莲种植土壤重金属Cd的阻控效应 |
| The controlling effect of biochar-quicklime on heavy metal Cd in planting soil for Passiflora edulis |
| 投稿时间：2023-09-22 修订日期：2023-11-02 |
| DOI：10.13938/j.issn.1007-1431.20230471 |
| 中文关键词: 复合钝化剂 重金属镉(Cd) 西番莲 Cd富集转运 阻控效应 |
| 英文关键词:Compound passivator Heavy metal cadmium (Cd) Passiflora edulis Cd enrichment and transport Controlling effect |
| 基金项目:贵州省科技计划项目（黔科合支撑[2020]1Y176号，黔科合支撑[2021]一般460，黔科合支撑[2022]一般200-02，黔科合支撑[2023]一般151，黔科合支撑[2019]2269号） |
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| 中文摘要: |
| 以西番莲Passiflora edulis为研究对象进行盆栽试验,设置不同重金属Cd浓度土壤,添加不同浓度比例的“生物炭—生石灰”复合钝化剂,测定西番莲的形态特征、各器官Cd含量以及种植土壤有效态Cd含量,分析“生物炭—生石灰”复合钝化剂,对西番莲植株土壤重金属Cd的阻控效应。结果表明,(1)添加不同浓度比例的复合钝化剂均显著降低了西番莲种植土壤的有效Cd含量,降低Cd的毒害,改善土壤养分状况,促进西番莲的生长。(2)添加不同浓度比例的复合钝化剂均降低了西番莲的对Cd的吸收、富集及转运,果实中Cd含量小于≤0.05mg?kg-1。(3)综合土壤改良、植株生长以及对Cd的吸收、富集及转运,黄果西番莲添加生物炭:生石灰=1:1对土壤重金属Cd阻控效果最佳；紫果西番莲低浓度土壤Cd污染采用生物炭:生石灰=1:1效果最优,高浓度Cd污染则采用生物炭:生石灰=1:2效果最好。添加不同比例复合钝化剂可改良土壤,使西番莲果品达到国家食品安全标准,实现安全、绿色生产的目标。 |
| 英文摘要: |
| A pot experiment was conducted with Passiflora edulis as the research object, different concentrations of cadmium (Cd) and different "biochar-quicklime" compound passivators were added in planting soil, the morphological characteristics of P. edulis, the content of Cd in various organs and the content of available Cd in soil were tested, to analyse the controlling effect of biochar-quicklime on heavy metal Cd in planting soil for P. edulis. The results showed that: (1) different concentrations of compound passivator significantly reduced the content of available Cd in the soil, reduced the toxicity of Cd, improved soil nutrient status and promoted the growth of P. edulis. (2) Different concentrations of compound passivator decreased the absorption, enrichment and transport of Cd in P. edulis, and the content of Cd in fruit was less than≤ 0.05mgkg-1.(3) Considering soil improvement, plant growth, absorption, enrichment and transport of Cd, biochar: quicklime = 1:1 had the best controlling effect on soil heavy metal Cd for P. edulis f. flavicarpa Degener; For P. edulis Sims, biochar: quicklime =1:1 also had the best controlling effect on low concentration soil Cd pollution, however, biochar: quicklime=1:2 was suitable for high concentration Cd pollution. Different proportion of compound passivator can improve the soil, make the fruits meet the national food safety standard, and achieve the goal of safe and green production. |
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