应用生态学报2012，Vol.23Issue(8)：2219-2224,6.
氯嘧磺隆与尿素对土壤微生物生物量碳、氮及无机氮的影响
Effects of chlorimuron-ethyl and urea on soil microbial biomass carbon and nitrogen and soil inorganic nitrogen
摘要
Abstract
A microcosm experiment was conducted to study the effects of different concentration chlorimuron-ethyl ( 20, 200, and 2000 μg · kg-1 soil ) and its combination with urea (120 mg · kg-1 soil) on the dynamic changes of soil microbial biomass carbon and nitrogen and soil nitrate nitrogen and ammonium nitrogen. Applying chlorimuron-ethyl alone decreased the soil microbial biomass carbon and nitrogen throughout the experiment period (60 days), and the decrement increased with increasing chlorimuron-ethyl concentration. Chlorimuron-ethyl had little effects on the soil ammonium nitrogen and nitrite nitrogen in the early period of the experiment, but increased the soil ammonium nitrogen in the mid-period (15 d) and the soil nitrate nitrogen in the late period (after 30 days) significantly. Both urea addition and its combination with chlorimuron-ethyl increased the soil microbial biomass carbon and nitrogen obviously in a short time, but the effect of combined addition of urea and chlorimuron-ethyl weakened then. Applying urea and its combination with chlorimuron-ethyl resulted in a lasting increase of soil nitrate nitrogen and ammonium nitrogen.关键词
氯嘧磺隆/尿素/微生物生物量碳/微生物生物量氮/无机氮Key words
chlorimuron-ethyl/ urea/ microbial biomass carbon/ microbial biomass nitrogen/ inorganic nitrogen分类
资源环境引用本文复制引用
谭焕波,李新宇,张惠文,李旭,徐明恺..氯嘧磺隆与尿素对土壤微生物生物量碳、氮及无机氮的影响[J].应用生态学报,2012,23(8):2219-2224,6.基金项目
国家自然科学基金项目(41101221,41071202)资助. （41101221,41071202）
