结合态的14C 绿黄隆和 /或其降解物 (14C BR0 )在水稻生态系统中可分解释放。在 1、2、3、4、6μg/ g土14C BR0 中 ,于直播水稻和移栽苗 (4μg/ g土14C BR0 )分别经 3 9d和 2 9d后 ,14C释出率分别达 75 0 %、68 7%、62 6%、5 8 0 %及 70 4 %。其中绝大部分以挥发性态14C逸走 ,其次存留在土壤中 ,少量被秧苗吸收 ,并能抑制秧苗的发育生长。留在土壤中的可提态残留物 (ER2 )对水稻的毒害与绿黄隆相似 ,经HPLC分析 ,检测到它含有绿黄隆及其 2种主要降解物 ,即邻氯苯磺酰胺和均三嗪胺 The bound 14C chlorothalonil and / or its degradates (14C BR0) are released in the rice ecosystem. At 1, 2, 3, 4, 6μg / g soil 14C BR0, the 14C release rates reached 75 0% respectively after 3 9 days and 2 9 days after inoculated rice and transplanted seedlings (4μg / g soil 14C BR0) , 68 7%, 62 6%, 58 0% and 70 4%. Most of them evaporate in the volatile state 14C, followed by remaining in the soil, a small amount absorbed by the seedlings, and can inhibit the growth and development of seedlings. The residue of ER2 remaining in the soil is similar to chlorothalonil in its toxicity to rice, and it was detected by HPLC that it contained chlorotoluron and its two major degradation products, o-chlorobenzenesulfonamide and Triazine amine