Toxicity induced by heavy metals deteriorates soil fertility status. It also adversely affects the growth and yield of crops. These heavy metals become part of the food chain when crops are cultivated in areas where heavy metals are beyond threshold limits. Cadmium (Cd) and nickel (Ni) are considered the most notorious ones among different heavy metals. The high water solubility of Cd made it a potential toxin for plants and their consumers. Accumulation of Ni in plants, leaves, and fruits also deteriorates their quality and causes cancer in humans when such a Ni-contaminated diet is used regularly. Both Cd and Ni also compete with essential nutrients of plants, making the fertility status of soil poor. To overcome this problem, the use of activated carbon biochar can play a milestone role. In the recent past application of activated carbon biochar is gaining more and more attention. Biochar sorb the Cd and Ni and releases essential micronutrients that are part of its structure. Many micropores and high cation exchange capacity make it the most acceptable organic amendment to improve soil fertility and immobilize Cd and Ni. In addition to improving water and nutrients, soil better microbial proliferation enhances the soil rhizosphere ecosystem and nutrient cycling. This review has covered Cd and Ni harmful effects on crop yield and their immobilization by activated carbon biochar. The focus was made to elaborate on the positive effects of biochar on crop yield and soil health.

重金属引起的毒性使土壤肥力状况恶化。它还对作物的生长和产量产生不利影响。当作物在重金属超过阈值限制的地区种植时，这些重金属成为食物链的一部分。镉（Cd）和镍（Ni）被认为是不同重金属中最臭名昭著的。镉的高水溶性使其成为植物及其消费者的潜在毒素。当经常使用这种受镍污染的饮食时，植物、叶子和水果中的镍积累也会降低它们的质量并导致人类癌症。Cd 和 Ni 还与植物必需的养分竞争，使土壤的肥力状况不佳。为了克服这个问题，活性炭生物炭的使用可以起到里程碑的作用。近年来，活性炭生物炭的应用越来越受到关注。Biochar 吸附 Cd 和 Ni 并释放作为其结构一部分的必需微量营养素。许多微孔和高阳离子交换能力使其成为提高土壤肥力和固定Cd和Ni的最可接受的有机改良剂。除了改善水分和养分外，土壤更好的微生物增殖还能增强土壤根际生态系统和养分循环。本综述涵盖了 Cd 和 Ni 对作物产量的有害影响及其活性炭生物炭的固定化。重点阐述了生物炭对作物产量和土壤健康的积极影响。许多微孔和高阳离子交换能力使其成为提高土壤肥力和固定Cd和Ni的最可接受的有机改良剂。除了改善水分和养分外，土壤更好的微生物增殖还能增强土壤根际生态系统和养分循环。本综述涵盖了 Cd 和 Ni 对作物产量的有害影响及其活性炭生物炭的固定化。重点阐述了生物炭对作物产量和土壤健康的积极影响。许多微孔和高阳离子交换能力使其成为提高土壤肥力和固定Cd和Ni的最可接受的有机改良剂。除了改善水分和养分外，土壤更好的微生物增殖还能增强土壤根际生态系统和养分循环。本综述涵盖了 Cd 和 Ni 对作物产量的有害影响及其活性炭生物炭的固定化。重点阐述了生物炭对作物产量和土壤健康的积极影响。本综述涵盖了 Cd 和 Ni 对作物产量的有害影响及其活性炭生物炭的固定化。重点阐述了生物炭对作物产量和土壤健康的积极影响。本综述涵盖了 Cd 和 Ni 对作物产量的有害影响及其活性炭生物炭的固定化。重点阐述了生物炭对作物产量和土壤健康的积极影响。