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目的:研究化学农药阿维菌素对枸杞多糖(LBP)含量的影响。方法:在枸杞瘿螨发生期,喷施2%阿维菌素乳油,定期采样。采用苯酚-硫酸法提取,分光光度法测定LBP含量。结果:枸杞喷药样品在施药后0~5 d,LBP含量随时间推移逐渐升高,5 d达到最高;药后10 d,LBP含量降到最低;药后21 d,LBP含量接近对照。喷药样品的LBP含量高于对照。结论:阿维菌素对枸杞多糖含量有一定影响。
Objective: To study the effect of chemical pesticides abamectin on LBP content. Methods: In the wolf mite occurrence period, spraying 2% avermectin EC, regular sampling. Phenol - sulfuric acid extraction, spectrophotometric determination of LBP content. Results: The content of LBP increased gradually with the lapse of time from 0 to 5 days after spraying. The content of LBP decreased to the lowest on the 10th day after treatment. The content of LBP was close to the control at 21 days after treatment. The LBP content of the sprayed samples was higher than the control. Conclusion: Abamectin has a certain influence on the content of Lycium barbarum polysaccharides.