摘要： 通过室内培养试验,研究了三氯卡班(TCC)对土壤微生物数量和酶活性的影响。结果表明,低浓度2.5mg/kg三氯卡班(TCC)处理对土壤中细菌和放线菌有激活作用,20.0~70.0 mg/kg的浓度对土壤中细菌和放线菌有明显的抑制作用,且持续时间较长。而对于真菌,2.5~20.0 mg/kg的浓度表现为激活作用,40.0~70.0 mg/kg的浓度开始阶段表现为激活作用,随时间推移,激活作用逐渐降低表现为抑制作用,随后又表现为激活作用且激活作用逐渐增强。各个浓度TCC处理对土壤中蛋白酶活性和多酚氧化酶活性均有抑制作用,对土壤中过氧化氢酶活性亦有抑制作用,且随着时间的推移,在21 d时抑制作用最大,但最后又都表现为激活作用。
关键词:
三氯卡班,
土壤微生物,
微生物数量,
酶活性
Abstract: The effects of Triclocarban on the number of microbial population and activities of the protease,polyphenoloxidase and hydrogen peroxidase in the soil were studied in this stu街.The result indicated that,after spraying the soil,low concentration of TCC 2. 5 mg/ kg activated the populations of soil bacteria and actinomyces;20. 0-70. 0 mg/ kg con-centration significantly inhibited the populations of soil bacteria and actinomyces numberfor a longer duration. TCC 2. 5-20. 0 mg/ kg in the experiment perfomrance the activation on fungal population,while TCC 40. 0-70. 0 mg/ kg performance the activation at first,then have inhabitation for a duration. At last they performance activation again. The effects ofTCC on the activities of soil protease and drogen peroxidase showed inhitition effects at first,In 21 days they have thegreatest effect and then performance the activation at last. The effects of TCC on the activities of soil hydrogen peroxideactivity showed inhibition stimulation effect.
Key words:
Triclocarban,
Soil microbes,
Microbial biomass,
Enzyme activities
中图分类号:
张丽珍, 牛伟, 戎宏立. 三氯卡班对土壤微生物数量和酶活性的影响[J]. 华北农学报, 2009, 24(1): 203-206. doi: 10.7668/hbnxb.2009.01.045.
ZHANG Li-zhen, NIU Wei, RONG Hong-li. Effects of Triclocarban on Soil Microbial Population and Enzyme Activities[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(1): 203-206. doi: 10.7668/hbnxb.2009.01.045.