Song Biao, Zhou Chengyun, Qin Meng, Zhao Beichen, Sang Fan
College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
J Environ Manage. 2023 Nov 1;345:118518. doi: 10.1016/j.jenvman.2023.118518. Epub 2023 Jun 27.
Clarifying the influences of biochar input on the rhizosphere dissipation and plant absorption of pesticides is a crucial prerequisite for utilizing biochar in the restoration of pesticide-contaminated soils. Nevertheless, the application of biochar to pesticide-contaminated soils does not always achieve consistent results on the rhizosphere dissipation and plant absorption of pesticides. Under the new situation of vigorously promoting the application of biochar in soil management and carbon sequestration, a timely review is needed to further understand the key factors affecting biochar remediation of pesticide-contaminated soil. In this study, a meta-analysis was conducted utilizing variables from three dimensions of biochar, remediation treatment, and pesticide/plant type. The pesticide residues in soil and the pesticide uptake by plant were used as response variables. Biochar with high adsorption capacity can impede the dissipation of pesticides in soil and mitigate their absorption by plants. The specific surface area of biochar and the type of pesticide are critical factors that affect pesticide residues in soil and plant uptake, respectively. Applying biochar with high adsorption capacity, based on specific dosages and soil characteristics, is recommended for the remediation of continuously cultivated soil contaminated with pesticides. This article aims to provide a valuable reference and understanding for the application of biochar-based soil remediation technology and the treatment of pesticide pollution in soil.
阐明生物炭输入对农药在根际的消散及植物对农药吸收的影响，是在农药污染土壤修复中利用生物炭的关键前提。然而，将生物炭应用于农药污染土壤时，在农药的根际消散和植物吸收方面并不总是能取得一致的结果。在大力推广生物炭在土壤管理和碳固存中应用的新形势下，需要及时进行综述，以进一步了解影响生物炭修复农药污染土壤的关键因素。在本研究中，利用生物炭、修复处理和农药/植物类型三个维度的变量进行了荟萃分析。将土壤中的农药残留和植物对农药的吸收作为响应变量。具有高吸附能力的生物炭会阻碍土壤中农药的消散，并减少植物对其的吸收。生物炭的比表面积和农药类型分别是影响土壤中农药残留和植物吸收的关键因素。基于特定剂量和土壤特性，建议应用具有高吸附能力的生物炭来修复受农药污染的连作土壤。本文旨在为基于生物炭的土壤修复技术的应用以及土壤中农药污染的治理提供有价值的参考和认识。
