【摘要】 研究了施用五氯酚钠后土壤微生物的数量、主要生化活性以及微生物的优势菌群。结果表明, 五氯酚钠对土壤微生物活性有明显的影响, 对土壤细菌和好气性自生固氮菌有强烈的刺激效应, 而放线菌和霉菌则被严重抑制; 土壤呼吸作用强度、氨化作用强度、硝化作用强度、过氧化氢酶活性、多酚氧化酶活性增强, 而纤维素分解作用强度减弱; 芽孢杆菌B3、B4、B5菌株为污染土壤的优势细菌,青霉属为霉菌的优势属, 淡紫灰类群、粉红孢类群、白孢类群、金色类群、烬灰类群、轮生类群、青色类群从污染土壤中发生缺失。更多还原

【Abstract】 The microbial activity and dominant microorganisms in soil polluted by PCP Na were studied in this experiment.The results indicated that PCP Na had a significant effect on microbial activity in soil.PCP Na stimulated the growth of bacteria and azotobaeter,but inhibited the growth of actinomyces and fungi .The results also showed that soil respiration,ammonification,nitrification,activities of catalase and polyphenoloxidase were stimulated,however,soil cellulose decomposition was inhibited.B3,B4 and B5 were dominant strains of bacteria in soil polluted by PCP Na,and penicillium was dominant genus of fungi. Streptomyces lavendulae,Streptomyces roseosporus,Streptomyces albosporus,Streptomyces aureus,Streptomyces cinerogriseus,Streptomyces verticillatus and Streptomyces glaucus were not found in the polluted soil.更多还原