Influence of Chlorsulfuron Contamination on Ratios of Biomass Carbon and nitrogen to Total Organic Carbon And Nitrogen in Soil

摘要

The extent and seriousness of the contamination of soils by pesticides still remain to be determined. In agricultural systems, herbicides are the largest class of pesticides used(Shea, 1985). Chlorsulfuron is one of the most important sulfonylurea herbicides with important feature of very high herbicidal activity, which results in extremely low application rates of 10～40 g ha~-1(Blair and Martin, 1998). The suflonylurea herbicides can persist in the soil for more than 1 year(Brown, 1990).