Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Tokyo, 183-8509, Fuchu, Japan.
Bull Environ Contam Toxicol. 2012 Aug;89(2):306-11. doi: 10.1007/s00128-012-0700-1. Epub 2012 Jun 13.
The behavior of butachlor and pyrazosulfuron-ethyl in paddy water was investigated using micro paddy lysimeters with prescribed hydrological conditions under ambient temperature in spring and summer for simulating two rice crop seasons. Although they were not significantly different, the dissipation of both herbicides in paddy water in the summer experiment was faster than in the spring experiment. The half-lives (DT(50)) in paddy water for spring and summer experiments were 3.2 and 2.5 days for butachlor, and 3.1 and 1.6 days for pyrazosulfuron-ethyl, respectively.
采用微稻田渗滤器，在春、夏两季模拟田间条件下，研究了丁草胺和吡嘧磺隆乙酯在稻田水中的行为。尽管它们没有显著差异，但在夏季实验中，两种除草剂在稻田水中的消解速度均快于春季实验。在春、夏两季实验中，丁草胺和吡嘧磺隆乙酯在稻田水中的半衰期（DT（50））分别为 3.2 和 2.5 天，3.1 和 1.6 天。
