【摘要】 施用农药已经成为当今世界十分盛行的作物保护手段。研究作物对农药的吸收及转运机制对促进农药吸收、提高农药利用率以及创制新农药提供科学依据。本试验以三氟苯嘧啶，氯虫苯甲酰胺，噻呋酰胺为供试农药，以水稻(Oryza sativa L.)为研究对象，通过室内水培结合抑制剂(水通道抑制剂、离子通道抑制剂、代谢抑制剂、蒸腾抑制剂)分析水稻各组织中农药含量及转运系数。结果表明，3种农药的主要富集器官为根系，TF(转移因子)<1;噻呋酰胺的吸收转运与其质量浓度无关，在1.0 mg/L和10.0 mg/L质量浓度处理下没有显著差异；在1.0 mg/L质量浓度处理下，水稻根系对三氟苯嘧啶的吸收是多通道参与的主动过程，对氯虫苯甲酰胺的吸收转运则是不需要通道蛋白以及载体协助的过程，对噻呋酰胺的吸收需要能量，可能依赖阴离子通道以及蒸腾作用。更多还原

【Abstract】 The application of pesticides has become a very popular crop protection method in the world today. Studying the absorption and transport mechanism of pesticides by crops provides a scientific basis for promoting pesticide absorption, improving pesticide utilization, and creating new pesticides. In this experiment, triflumezopyrim, chlorantraniliprole and thifluzamide were used as test pesticides, and rice(Oryza sativa L.) was used as research object. The pesticide content and transport coefficient in various tissues of rice were analyzed by indoor hydroponics combined with inhibitors(water channel inhibitors, ion channel inhibitors, metabolic inhibitors, transpiration inhibitors). The results showed that the main enrichment organ of the three pesticides was the root, and the transfer factor(TF)<1. The absorption and transport of thifluzamide were not related to its mass concentration, and there was no significant difference between the two treatments at the mass concentration of 1.0 mg/L and 10.0 mg/L. Under the treatment of 1.0 mg/L, the absorption of triflumezopyrim by rice roots was an active process involving multiple channels, while the absorption and transport of chlorantraniliprole is a process without the assistance of channel proteins and carriers. The absorption of thifluzamide required energy and may depend on anion channels and transpiration.更多还原