论文部分内容阅读
[目的]研究氯嘧磺隆降解菌SN10菌株对土壤微生物种群动态变化和作物生长的影响。[方法]通过室内盆栽试验,采用稀释涂布平板法,氯嘧磺隆添加质量分数分别为10、50、100μg/kg。将配好的土样接种SN10菌株,同时设置不加氯嘧磺隆的清水对照和加氯嘧磺隆不加菌株的对照。[结果]接种降解菌SN10菌株后减弱了氯嘧磺隆对原有土壤微生物区系的影响,减轻对玉米、高粱、黄瓜、小麦的药害作用,使出苗率、株高和鲜质量均有所提高,低质量分数药剂加降解菌SN10的处理基本恢复到清水对照水平。[结论]SN10菌株能够有效降低土壤中氯嘧磺隆的残留,对于被氯嘧磺隆污染的土壤具有较好的修复作用。
[Objective] The research aimed to study the effect of chlorimuron-degrading strain SN10 on the dynamic changes of soil microbial population and crop growth. [Method] By means of indoor pot experiment and dilution coating plate method, the mass fraction of chlorimuron-ethyl were 10,50,100μg / kg respectively. Inoculated with a good soil sample SN10 strains, while setting the control without chlorosulfuron water plus chlorimuron-free control. [Result] The results showed that the inoculation rate, plant height and fresh weight of the strain SN10 attenuated the effects of chlorimuron - ethyl on the original soil microbial flora, reduced the phytotoxicity to maize, sorghum, cucumber and wheat The treatment of low mass fraction drug-degrading bacteria SN10 was basically restored to the control level of fresh water. [Conclusion] The strain SN10 could effectively reduce the residues of chlorimuron-ethyl in the soil, and could restrain the soil contaminated by chlorimuron-ethyl.