戊菌隆对渍水土壤微生物参数的影响。

Effect of pencycuron on microbial parameters of waterlogged soil.

作者信息

Pal R, Chakrabarti K, Chakraborty A, Chowdhury A

机构信息

Department of Agricultural Chemistry and Soil Science, Calcutta University, Calcutta, India.

出版信息

J Environ Sci Health B. 2006;41(8):1319-31. doi: 10.1080/03601230600963995.

DOI:10.1080/03601230600963995

PMID:17090495

Abstract

A laboratory study was conducted to monitor the effect of pencycuron [1-(4-chlorobenzyl)-1-cyclopentyl-3-phenylurea] on microbial parameters of alluvial (AL) soil (Typic udifluvent) and coastal saline (CS) soil (Typic endoaquept) under waterlogged condition. Pencycuron at field rate (FR), 2FR and 10FR affected the microbial biomass C (MBC), soil ergosterol content and fluorescein diacetate hydrolyzing activity (FDHA) differentially. The DCM amendment did not seem to have any counteractive effect on the toxicity of pencycuron on the microbial variables. The change in microbial metabolic quotient (qCO2) and microbial respiration quotient (QR), indicated pencycuron induced disturbance at 10FR. Present study revealed that the metabolically activated microbial population was more suppressed compared to the dormant population.

摘要

进行了一项实验室研究，以监测戊菌隆[1-(4-氯苄基)-1-环戊基-3-苯基脲]在淹水条件下对冲积土（典型湿新成土）和滨海盐土（典型潮湿雏形土）微生物参数的影响。田间施用量（FR）、2倍FR和10倍FR的戊菌隆对微生物生物量碳（MBC）、土壤麦角固醇含量和荧光素二乙酸水解活性（FDHA）有不同影响。二氯甲烷改良剂似乎对戊菌隆对微生物变量的毒性没有任何拮抗作用。微生物代谢商（qCO2）和微生物呼吸商（QR）的变化表明，10倍FR的戊菌隆会引起干扰。目前的研究表明，与休眠种群相比，代谢活跃的微生物种群受到的抑制更大。