沼液中几种抗生素的检测与樱花细菌性穿孔病防效研究简

为探索沼液防治植物病害的机理，利用高效液相色谱检测沼液中几种抗生素的含量，并对樱花细菌性穿孔病防效进行研究。检测结果表明，抗生素含量分别为：土霉素（OTC）0.08347 mg/L、四环素（TC）0.04907 mg/L、金霉素（CTC）0.04229 mg/L。防效试验结果表明：沼液4次以上的连续叶面喷施与细菌性病害防治的常用农药链霉素效果相当，但3次以下的喷施防效不理想。

Detection of Antibiotics in Biogas Slurry and Study on its Control Effect on Cherry Blossom Bacterial Shot Hole Disease

In order to find out the control mechanism of biogas slurry to plant diseases, the study determined the contents of antibiotics existed in biogas slurry with high performance liquid chromatography （HPLC）, and then observed its prevention and control effect on cherry blossom bacterial shot-hole disease. Results showed that antibiotics existed in biogas slurry included oxytetracycline （OTC）, tetracycline （TC） and chlortetracycline （CTC） with amount of 0.08347 mg/L, 0.04907 mg/L and 0.04229 mg/L respectively. The prevention and control effects indicated that application of biogas slurry for 4 times in Summer resulted in a similar efficiency as that of streptomycin, which is a common pesticide. But the efficiency was not good when biogas slurry was applied less than 3 times.