模拟降雨对喷施在水稻叶片上的三环唑的去除作用。

Simulated rainfall removal of tricyclazole sprayed on rice foliage.

作者信息

Phong Thai Khanh, Nhung Dang Thi Tuyet, Yamazaki Kenichi, Takagi Kazuhiro, Watanabe Hirozumi

机构信息

Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.

出版信息

Bull Environ Contam Toxicol. 2008 May;80(5):438-42. doi: 10.1007/s00128-008-9431-8. Epub 2008 May 17.

DOI:10.1007/s00128-008-9431-8

PMID:18488130

Abstract

Two rainfall simulations of 30 mm h(-1), with 48-h interval between two simulations, were performed on rice lysimeters at 24, 48, and 72 h after being sprayed with tricyclazole. In the first simulated rainfall, wash-off concentration of tricyclazole was significant irrespective of the interval between the spray time and the rainfall simulation. And from 20.5% to 24.2% of tricyclazole deposited on leaves was removed from the rice foliage. In the second simulated rainfall, concentration of tricyclazole in wash-off water was significantly lower and less than 3.6% of the deposited tricyclazole was lost.

摘要

在喷施三环唑24、48和72小时后，对水稻测渗仪进行了两次降雨模拟，降雨强度均为30毫米/小时，两次模拟之间间隔48小时。在第一次模拟降雨中，无论喷施时间与降雨模拟之间的间隔如何，三环唑的淋溶浓度都很显著。叶片上沉积的三环唑有20.5%至24.2%被从水稻叶片上冲刷掉。在第二次模拟降雨中，淋溶水中三环唑的浓度显著降低，沉积的三环唑损失不到3.6%。