单嘧磺酯在土壤中的淋溶迁移特性及其影响因素  

Leaching of Monosulfuron-ester in Soil Columns and Its Affecting Factors

作　　者：聂果[1] 吴春先[1] 王广成[1] 高立明[1] 陈丙坤[1] 许艳秋[1] 张忠明[1] 

机构地区：[1]四川省农药检定所,四川成都610041

出　　处：《农药科学与管理》2013年第10期38-44,共7页Pesticide Science and Administration

摘　　要：采用土壤柱淋溶法,研究了单嘧磺酯在土壤中的迁移淋溶特性,探讨了土壤类型、淋溶体积、淋溶速度、施药量和土壤改良剂等因素对单嘧磺酯在土壤中淋溶的影响。研究表明单嘧磺酯在土壤中有较强的淋溶性。单嘧磺酯在黑龙江粘土中的淋溶迁移受降雨量、降雨强度、施药量等的影响。降雨量越大,单嘧磺酯在土壤中的淋溶迁移能力越强,淋出率越高;在降雨量相同的情况下,降雨强度越小,单嘧磺酯的淋溶迁移能力越强,淋出率越高;施药量越大,单嘧磺酯在土壤中的淋溶迁移能力越强,淋出率也越高。添加土壤改良剂腐植酸能延阻单嘧磺酯在黑龙江粘土中的淋溶迁移,而且单嘧磺酯在土壤中的淋溶迁移能力与土壤改良剂的添加量呈负相关。Leaching of monosulfuron-ester in soils was investigated using soil column leaching method under laboratory conditions.The results showed that monosulfuron-ester was easily mobile in three soils.Leaching water volume,leaching speed,herbicide application dosage,and organic amendments could influence monosulfuron-ester leaching in soils.Monosulfuronester leaching ratio from soils increased with leaching water volume and herbicide application dosage,but decreased with leaching speed at the same leaching water volume.HA could decrease monosulfuron-ester leaching from the soil.Leaching of monosulfuron-ester in the soil was negatively correlated with HA concentrations in soils.

关 键 词：单嘧磺酯 土壤 迁移 淋溶 

分 类 号：X592[环境科学与工程—环境工程]