2,4-D：-二甲胺在小麦和土壤中的消解与残留。
Dissipation and residues of 2,4-D: -dimethylammonium in wheat and soil.
机构信息
Ministry of Agriculture, Nanjing Jiangsu, People's Republic of China.
出版信息
Bull Environ Contam Toxicol. 2010 Aug;85(2):157-9. doi: 10.1007/s00128-010-0074-1. Epub 2010 Jul 17.
The environmental behavior of 720 g/L 2,4-D: -dimethylammonium AS under wheat field conditions was studied in detail. The dissipation behaviors of 2,4-D: -dimethylammonium in wheat and soil were fitted to first-order kinetic equation (C = C (0) e (-lambdat )). But different experimental points and years have different initial deposits and half-lives (T (1/2)). After applying 720 g/L 2,4-D: -dimethylammonium AS at recommended dosage and 1.5-fold recommended dosage during 3-4 leaf stage, the residues of 2,4-D: -dimethylammonium in wheat plant, wheat grain and soil were all lower than 0.02 mg/kg. The obtained results suggested that, it is safety for application at the recommended dosage during 3-4 leaf stage to control weeds in wheat field.
在麦田条件下详细研究了 720g/L 2,4-D：-二甲基铵盐的环境行为。2,4-D：-二甲基铵在小麦和土壤中的消解行为符合一级动力学方程（C = C(0)e(-lambdat)）。但是，不同的实验点和年份有不同的初始沉积和半衰期（T(1/2)）。在三叶期至四叶期推荐剂量和推荐剂量 1.5 倍分别使用 720g/L 2,4-D：-二甲基铵盐后，小麦植株、小麦籽粒和土壤中 2,4-D：-二甲基铵盐的残留均低于 0.02mg/kg。结果表明，在三叶期至四叶期推荐剂量下使用，防治麦田杂草是安全的。
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