Fernández-Bayo J D, Romero E, Schnitzler F, Burauel P
Department of Environmental Protection, Estación Experimental del Zaidín (CSIC), C/Profesor Albareda 1, 18008 Granada, Spain.
Environ Pollut. 2008 Jul;154(2):330-7. doi: 10.1016/j.envpol.2007.10.002. Epub 2007 Nov 19.
The influence of two vermicomposts from winery and distillery wastes on the distribution of diuron in agricultural soil was studied. Physical soil fractionations at 0, 9, 27, 49 and 77 days, allowed the quantification of pesticide residues in different particle-size fractions, coarse waste (WF), sand-sized (SF), silt-sized (SiF), clay-sized (CF) and dissolved organic matter-sized fraction (DOM). The SiF made a greater contribution to the formation of non-extractable residues in unamended soil, but when vermicomposts were added, new sorption sites in WF appeared, being higher for the more humified vermicompost V2. The dissolved organic carbon (DOC) increased with the addition of vermicompost, but the concentration of the desorbed 14C-radiochemical did not increase. Non-significant increment was observed with time for the non-extractable fraction with amendments. Diuron was transformed in all samples, although less than 0.5% was mineralized. The main effect caused by vermicomposts was a reduction in the availability of diuron in soil.
研究了两种来自酿酒厂和蒸馏厂废弃物的蚯蚓堆肥对农业土壤中敌草隆分布的影响。在0、9、27、49和77天进行土壤物理分级，以便对不同粒径组分（粗废弃物（WF）、砂粒级（SF）、粉粒级（SiF）、黏粒级（CF）和溶解有机质级分（DOM））中的农药残留进行定量分析。在未改良土壤中，SiF对不可提取残留的形成贡献更大，但添加蚯蚓堆肥后，WF中出现了新的吸附位点，腐殖化程度更高的蚯蚓堆肥V2的吸附位点更高。添加蚯蚓堆肥后溶解有机碳（DOC）增加，但解吸的14C放射性化学物质的浓度并未增加。添加改良剂后，不可提取级分随时间的增加不显著。所有样品中的敌草隆都发生了转化，尽管矿化的敌草隆不到0.5%。蚯蚓堆肥的主要作用是降低土壤中敌草隆的有效性。
