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通过向土壤中添加四环素溶液的方法研究了油菜种植条件下,不同浓度(0.3,0.6,0.9mg/kg)的外源四环素对土壤微生物活性及数量的影响,以评价其环境生态效应。结果表明,土壤中加入四环素后,不同浓度的四环素药物对微生物量碳的影响表现为抑制作用,在27d达到最低,为空白的6.25%～11.97%;而对土壤代谢商qCO2却表现出明显的激活作用,7d达到最高,为空白的550%～622%,且微生物活性的受抑制—激活程度及持续时间与处理浓度成负相关,50d后施药土壤和对照组土壤的代谢商qCO2基本趋于一致。土壤中加入四环素后,各浓度处理对土壤微生物数量有强烈的抑制作用。
The effects of different concentration (0.3,0.6,0.9mg / kg) of exogenous tetracycline on soil microbial activity and quantity under rapeseed cultivation were studied by adding tetracycline solution to soil to evaluate its environmental and ecological effects. The results showed that tetracycline was added into the soil at different concentrations of tetracycline, which showed the inhibitory effect on the microbial biomass carbon, which reached the lowest at 27 days, which was 6.25% ~ 11.97% of the blank, while qCO2 of the soil metabolizer showed obvious Activated, and reached the maximum at 7d, which was 550% -622% of the blank, and the inhibition of microbial activity - the degree of activation and the duration was negatively correlated with the treatment concentration. After 50 days, the metabolic rate of qCO2 In agreement. After adding tetracycline to the soil, the concentration of each treatment had a strong inhibitory effect on the quantity of soil microorganisms.