摘要
【目的】系统研究磺酰磺隆在土壤中的主要环境行为：土壤降解、土壤表面光降解、在土壤中的吸附性和移动性等。【结果】磺酰磺隆在土壤中的吸附为物理吸附，吸附常数（Kd）为江西红壤3．05，太湖水稻土1．63和东北黑土1．15；江西红壤属中等移动，太湖水稻土和东北黑土均属可移动等级；土壤中的降解半衰期为14．5±2．5d；土壤表面光解半衰期为22．6h，在土壤表面为难光解农药。【结论】通过系统研究磺酰磺隆土壤环境行为，为该类除草剂的合理使用及生态修复提供了理论基础。
[Aims] The main environmental behaviors of sulfosulfuron including degradation in soil, photolysis in soil surface, absorption and mobility in soil were systematic studied. [Results] The adsorption of sulfosulfuron was physical adsorption and absorption constant （Kd） of sulfosulfuron in Jiangxi red soil, paddy soil, black soil was 3.05, 1.63 and 1.15, respectively. It had middling transference in Jiangxi red soil and movability in paddy soil and black soil. The half-life of sulfosulfuron degradation in soil was 14.5-42.5 d, The hall-life of sulfosulfuron photolysis in surface soil was 22.6 h, which was difficult to be photolyzed. [Conclusions] It provided some basic information for safety use of the herbicides in field.
出处
《农药》
CAS
北大核心
2012年第12期890-893,共4页
Agrochemicals
基金
国家自然科学基金(41101307)
关键词
磺酰磺隆
环境行为
吸附性
移动性
降解性
sulfosulfuron
environmental behavior
absorption
mobility
degradation
