利用花生壳改性、复配生石灰及钝化等技术对贵州某镉(Cd)污染农田土壤进行修复研究。通过花生壳腐熟、改性、复配及土壤钝化修复评价试验,采用巯基乙酸为改性剂,对腐熟35 d花生壳进行改性,改性剂用量为花生壳质量的2倍;当改性花生壳与生石灰以4∶1比例复配作为钝化剂,施用量为土壤质量1%时,对土壤中有效态Cd钝化效率可达81.08%。该复配改性花生壳钝化剂对污染农田土壤中的Cd具有良好的钝化效果。 The peanut shell modified, compound lime and passivation techniques were used to rehabilitate the soils contaminated by cadmium (Cd) in Guizhou. The peanut hull was modified by maturity, modification, compounding and soil passivation. The modified peanut shell was modified with thioglycolic acid as modifier, and the amount of modifier was twice that of peanut hull. The ratio of 4: 1 was used as the passivating agent for the peanut hull and quicklime. When the application rate was 1% of the soil mass, the effective Cd passivation efficiency to the soil was 81.08%. The compound modified peanut shell deactivator has good passivation effect on Cd contaminated farmland soil.