何健, 李菊颖, 豆叶枝, 倪妮, 张悦清, 吴文铸, 张爱国, 单正军. 环丙酰草胺在土壤中的迁移特性[J]. 农药学学报, 2020, 22(4): 721-726. DOI: 10.16801/j.issn.1008-7303.2020.0078
    引用本文: 何健, 李菊颖, 豆叶枝, 倪妮, 张悦清, 吴文铸, 张爱国, 单正军. 环丙酰草胺在土壤中的迁移特性[J]. 农药学学报, 2020, 22(4): 721-726. DOI: 10.16801/j.issn.1008-7303.2020.0078
    HE Jian, LI Juying, DOU Yezhi, NI Ni, ZHANG Yueqing, WU Wenzhu, ZHANG Aiguo, SHAN Zhengjun. Adsorption and leaching behavior of cyclanilide in soil[J]. Chinese Journal of Pesticide Science, 2020, 22(4): 721-726. DOI: 10.16801/j.issn.1008-7303.2020.0078
    Citation: HE Jian, LI Juying, DOU Yezhi, NI Ni, ZHANG Yueqing, WU Wenzhu, ZHANG Aiguo, SHAN Zhengjun. Adsorption and leaching behavior of cyclanilide in soil[J]. Chinese Journal of Pesticide Science, 2020, 22(4): 721-726. DOI: 10.16801/j.issn.1008-7303.2020.0078

    环丙酰草胺在土壤中的迁移特性

    Adsorption and leaching behavior of cyclanilide in soil

    • 摘要: 为研究环丙酰草胺在土壤中的吸附迁移规律,分别采用批平衡法和柱淋溶法测定了环丙酰草胺在江西红壤、太湖水稻土、常熟乌杉土、陕西潮土和东北黑土5种土壤中的吸附和淋溶特性,并运用数学模型对其在土壤中的吸附及迁移特性进行了分析。结果表明:环丙酰草胺在5种土壤中的等温吸附曲线符合线性吸附方程,吸附常数Kd在1.41~7.08之间;环丙酰草胺在5种土壤中的淋溶性大小依次为:东北黑土>陕西潮土>常熟乌杉土>太湖水稻土>江西红壤。通过对吸附常数Kd与土壤有机质含量和pH值的关系进行分析,发现土壤pH值在吸附过程中属主要因素,Kd与土壤pH值呈负相关。上述结果表明,环丙酰草胺在供试的5种土壤中比较容易迁移,影响其迁移的主要因素是土壤pH值。环丙酰草胺在使用过程中应关注其对地表水和地下水造成的风险。

       

      Abstract: In order to evaluate the ecological safety of cyclanilide in soil environment, the adsorption and leaching behavior of cyclanilide in soils was conducted by the batch equilibration techniques. Data were analyzed using mathematic models to describe the characteristic mechanism of adsorption and the shift of cyclanilide in soils. The results showed that the adsorption isotherms of cyclanilide was well described by linear equation.The adsorption values Kd of cyclanilide in 5 types of soils ranged from 1.41−7.08. The order of the mobilities of cyclanilide in different soils was as follows: Dongbei black soil > Shaanxi tide soil > Changshu wushan soil > Taihu paddy soil > Jiangxi red soil. It was found that the Kd value decreased with the increase of the pH value of soil. The simple linear correlations were regressed between OM, soils pH value and the value of adsorption coefficient (Kd), which indicated that the soil pH value was the dominating factor influencing the cyclanilide retention in all the systems. The mobilities of cyclanilide in 5 types of tested soils were high. Therefore, attention should be paid to the risk to surface water and groundwater by the use of cyclanilide.

       

    /

    返回文章
    返回