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首页> 外文期刊>Journal of the American Water Resources Association >REVIEW OF PESTICIDE RETENTION PROCESSES OCCURRING IN BUFFER STRIPS RECEIVING AGRICULTURAL RUNOFF
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REVIEW OF PESTICIDE RETENTION PROCESSES OCCURRING IN BUFFER STRIPS RECEIVING AGRICULTURAL RUNOFF

机译：审查农业径流中缓冲带中农药残留的过程

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摘要

Review of the published results shows that the retention of the two pesticide carrier phases (runoff volume and sediment mass) influences pesticide mass transport through buffer strips. Data averaged across different studies showed that the buffer strips retained 45% of runoff volume (ranging between 0 and 100%) and 76% of sediment mass (ranging between 2 and 100%). Sorption (soil sorption coefficient, K_(oc)) is one key pesticide property affecting its transport with the two carrier phases through buffer strips. Data from different studies for pesticide mass retention for weakly (K_(oc) < 100), moderately (100 < K_(oc) < 1,000), and strongly sorbed pesticides (K_(oc) > 1,000) averaged (with ranges) 61 (0-100), 63 (0-100), and 76 (53-100) %, respectively. Because there are more data for runoff volume and sediment mass retention, the average retentions of both carrier phases were used to calculate that the buffer strips would retain 45% of weakly to moderately sorbed and 70% of strongly sorbed pesticides on an average basis. As pesticide mass retention presented is only an average across several studies with different experimental setups, the application of these results to actual field conditions should be carefully examined.
机译：对已发表结果的审查表明，两个农药载体相（径流量和沉积物质量）的保留会影响农药通过缓冲带的质量传递。不同研究的平均数据表明，缓冲带保留了径流量的45％（0至100％）和泥沙质量的76％（2至100％）。吸附（土壤吸附系数，K_（oc））是一种重要的农药特性，会影响其在两个载体相之间通过缓冲带的传输。来自不同研究的数据的平均值（在一定范围内）为弱（K_（oc）<100），中度（100 1,000），农药残留量61（ 0-100），63（0-100）和76（53-100）％。因为有更多关于径流量和沉积物保留的数据，所以使用两种载体相的平均保留量来计算缓冲带平均可保留45％的弱吸附至中度吸附的农药和70％的强吸附性农药。由于所提供的农药保留质量只是在不同实验设置下的几项研究中的平均值，因此应仔细检查将这些结果应用于实际田间条件。

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