Positive (means±SD) neonicotinoid detections in groundwater from 2008–2012, State of Wisconsin Department of Agriculture Trade and Consumer Protection.

aAcreage estimates generated from USDA National Agricultural Statistics Service – Cropland Data Layer, 2008–2012 [26].bRow crops class is the sum of the following crop areas (ha): maize, soy, small grains, wheat, peas, sweet corn, and miscellaneous vegetables and fruits.cPercent potato calculated as the potato area grown annually divided by total arable row crop acreage (other row crops + potato).dPositive neonicotinoid detections extracted from long-term, groundwater wells maintained by the WI-DATCP-EQ Program.a. 种植面积估算数据由美国农业部（United States Department of Agriculture, USDA）国家农业统计服务处的耕地数据层（Cropland Data Layer）生成，时间跨度为2008—2012年[26]。 b. 条播作物类别面积为以下各类作物种植面积（单位：公顷）之和：玉米、大豆、小粒谷物、小麦、豌豆、甜玉米及杂类果蔬。 c. 马铃薯种植面积占比的计算方式为：年度马铃薯种植面积除以可耕种条播作物总种植面积（其他条播作物与马铃薯面积之和）。 d. 新烟碱类物质阳性检出结果取自威斯康星州农业部、贸易与消费者保护局环境质量项目（Wisconsin Department of Agriculture, Trade and Consumer Protection-Environmental Quality Program, WI-DATCP-EQ）维护的长期地下水监测井。