College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
Western Scientific Observation and Experiment Station of Development and Utilization of Rural Renewable Energy of Ministry of Agriculture, Northwest A&F University, Yangling, 712100, China.
Environ Sci Pollut Res Int. 2019 Feb;26(6):6116-6122. doi: 10.1007/s11356-018-4046-z. Epub 2019 Jan 7.
To investigate the effects of biogas residues containing antibiotics on lettuce growth and soil enzyme activity, the antibiotics oxytetracycline and sulfadiazine were used as additives; two kinds of feedstocks including pig manure and straw were chosen. Results showed that the higher the concentrations of the antibiotics are, the stronger the inhibition of soil sucrase activity becomes. The activity of sucrose enzyme in the test group with a single concentration of 60 mg/kg was significantly lower than the group that was treated with 0 mg/kg. In the mass, the organic fertilizer containing antibiotics can improve the soil urease activity and increase the urease activity of the soil. In the growth phase, urease activity increased by 27% from 0.85 mg NH-N/(g day) in the blank group to 1.08 NH-N/(g day) in the 0-mg test group. During all growing stages of lettuce, though the effects of the biogas residues containing oxytetracycline and sulfadiazine on the soil catalase activity were not obvious, the field application could inhibit the activity of soil catalase to some extent.
为了研究含有抗生素的沼气残留物对生菜生长和土壤酶活性的影响，选用了土霉素和磺胺嘧啶作为添加剂；选择了猪粪和秸秆两种原料。结果表明，抗生素浓度越高，对土壤蔗糖酶活性的抑制作用越强。在浓度为 60mg/kg 的单一浓度试验组中，蔗糖酶的活性明显低于未添加抗生素的对照组。在质量方面，含抗生素的有机肥能提高土壤脲酶活性，增加土壤脲酶活性。在生长阶段，空白组土壤中脲酶活性为 0.85mgNH-N/（g·天），0mg 试验组脲酶活性提高 27%，达到 1.08 NH-N/（g·天）。在生菜的整个生长阶段，尽管含有土霉素和磺胺嘧啶的沼气残留物对土壤过氧化氢酶活性的影响并不明显，但田间应用在一定程度上可以抑制土壤过氧化氢酶的活性。
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