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首页> 外文期刊>Fresenius environmental bulletin >SPATIAL, TEMPORAL DISTRIBUTION AND EFFICACY OF IMIDACLOPRID VIA DRIP IRRIGATION IN SUGARCANE AND SOIL APPLIED IN SOUTH CHINA
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SPATIAL, TEMPORAL DISTRIBUTION AND EFFICACY OF IMIDACLOPRID VIA DRIP IRRIGATION IN SUGARCANE AND SOIL APPLIED IN SOUTH CHINA

机译：华南地区甘蔗和土壤滴灌对咪唑菊酯的时空分布和有效性

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摘要

Borers are a major menace and cause considerable damage to sugarcane in south China. Imidacloprid (IMD) is one of the most important insecticides for managing pest in sugarcane ecosystem. In our study, field experiments were conducted to evaluate the spatial, temporal distribution and control efficacy of IMD via drip irrigation. The analysis of IMD in sugarcane and soil matrices was carried out using high-performance liquid chromatography (HPLC) with ultraviolet (UV) detection. The limit of detection (LOD) and limit of quantification (LOQ) of the method were 0.003 and 0.01 mg/kg, respectively. The recovery rates were range from 90.28% to 97.82% and relative standard deviation (RSD) was less than 7.00 %. The half-days of IMD in sugarcane and soil were 6.02 and 6.79 days. In our paper, bioconcentration factors (BCFs) of root, stem and leaf were used to evaluate the accumulation ability and the values were in an order leaf > stem > root. In addition, the distribution of IMD in soil was also studied by using the quantity ratios (QRs). IMD in soil was time dependent and could be easily transported from the top soil to the subsoil but the degradation in soil was quickly, this revealed that no potential environment risk was induced by IMD in soil. Our results also determine that it has good control effects of IMD applied via drip irrigation for controlling sugarcane borers during sugarcane production. The control efficacy was 63.55%, 83.08% and 87.92% after 15, 30 and 45 days, respectively. Therefore, IMD application by drip irrigation could be taken as safe for crop protection and environmental contamination point of view.
机译：ers虫是一种主要威胁，对中国南方的甘蔗造成相当大的损害。吡虫啉（IMD）是在甘蔗生态系统中控制害虫的最重要的杀虫剂之一。在我们的研究中，进行了野外实验以评估滴灌对IMD的时空分布和控制效果。甘蔗和土壤基质中IMD的分析使用高效液相色谱（HPLC）和紫外（UV）检测技术进行。该方法的检出限（LOD）和定量限（LOQ）分别为0.003和0.01 mg / kg。回收率在90.28％至97.82％之间，相对标准偏差（RSD）小于7.00％。甘蔗和土壤中IMD的半天分别为6.02和6.79天。在本文中，根，茎和叶的生物富集因子（BCFs）用于评估积累能力，其值按叶>茎>根的顺序排列。另外，还利用数量比（QRs）研究了IMD在土壤中的分布。土壤中的IMD是时间依赖性的，可以很容易地从表层土壤转移到下层土壤，但是土壤的降解很快，这表明IMD在土壤中没有潜在的环境风险。我们的结果还确定了它具有良好的IMD控制效果，该IMD通过滴灌应用来控制甘蔗生产过程中的甘蔗bore虫。 15、30和45天后的防治效果分别为63.55％，83.08％和87.92％。因此，从作物保护和环境污染的角度来看，通过滴灌施用IMD可以认为是安全的。

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