2013年下半年，随着今年获批进口的转基因农作物品种公布，关于转基因安全之争烽烟再起。笔者从经济视角出发分析转基因安全之争得出以下主要结论：第一，简单估算，2013年我国总共需要额外的5.78亿亩耕地或将复种指数提高到1.8才能达到进出口平衡。而这都是不可能完成的任务。第二，在中国，转基因之争的本质不在食用安全层面，而在其背后的供需状况和农业生产率方面。第三，调整农业战略，放弃大而全的农产品保护方针，转向保主粮战略。第四，从国家利益的层面整体协调官媒发声，主基调为引导民众食用非转基因作物。具体可以以欧盟为例，采用“轻作物”“重技术”的态度。

关键词：转基因；玉米；大米；大豆；进口

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Antioxidants are used in animal feed to prevent undesirable oxidation, which could result in lower feed consumption and nutrient deficiencies in the feed. Oxidation is a process in which hydrogen or oxygen is transferred from a substance to an oxidizing agent that accepts the electron. This leads to the dissemination of free radicals, which in turn causes chain reactions, thereby damaging or killing the cells. Antioxidants can interact with these free radicals and terminate the chain reaction before vital molecules in the animal feed are destroyed. Therefore, antioxidants ensure the safety of animal health and increase the shelf life of feed. The main end-users of animal feed antioxidants are meat producers and individual consumers.

关键词：抗氧化剂；动物饲料；饲料消耗；营养缺陷

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The California Department of Pesticide Regulation's (DPR's) Pesticide Use Report (PUR) is probably the largest and most complete database on pesticide use in the world. A system to collect information on pesticide use in California has been in operation in some form for over 50 years, with the current use reporting system started in 1990. The PUR contains information on nearly all production agricultural pesticide use and some nonagricultural use in California. The data collected include the pesticide product used, the date it was applied, the particular field treated, and application location to a square-mile section. Production agricultural use includes applications to growing crops, agricultural fields, and most applications to forest trees and ornamental turf. Other pesticide uses reported to DPR include post-harvest commodity treatments, right of way, landscapes, structural use, and other nonagricultural uses by commercial applicators. Because of the importance of the PUR for many groups and individuals, it is critical that the database be an accurate and complete as possible.

关键词：农药；杀虫剂；使用

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A method was developed to calculate annual county-level pesticide use for selected herbicides, insecticides, and fungicides applied to agricultural crops grown in the conterminous United States from 1992 through 2009. Pesticide-use data compiled by proprietary surveys of farm operations located within Crop Reporting Districts were used in conjunction with annual harvested-crop acreage reported by the U.S. Department of Agriculture National Agricultural Statistics Service (NASS) to calculate use rates per harvested-crop acre, or an estimated pesticide use (EPest) rate, for each crop by year. Pesticide-use data were not available for all Crop Reporting Districts and years. When data were unavailable for a Crop Reporting District in a particular year, EPest extrapolated rates were calculated from adjoining or nearby Crop Reporting Districts to ensure that pesticide use was estimated for all counties that reported harvested-crop acreage. EPest rates were applied to county harvested-crop acreage differently to obtain EPest-low and EPest-high estimates of pesticide-use for counties and states, with the exception of use estimates for California, which were taken from annual Department of Pesticide Regulation Pesticide Use Reports.

关键词：农药；环境影响；除草剂；杀虫剂；杀菌剂；农作物

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Casa a Campo: Pesticide Safety for Farmworker Families was an environmental justice community education project with five specific aims: (1) to conduct research that (a) documents the knowledge and beliefs of farmworker families in North Carolina about pesticide exposure and prevention at work and in the home, (b) documents pesticide exposure among farmworker families in North Carolina, and (c) documents other environmental health concerns that arise from community discussions among farmworker families in North Carolina; (2) to develop culturally and linguistically appropriate educational materials and implement programs that will promote ways to prevent or reduce exposure among farmworker families in North Carolina; (3) to develop culturally and linguistically appropriate educational materials and implement programs that will better prepare health care providers in North Carolina to recognize and treat pesticide exposure-related illness among agricultural labor families and counsel families on ways to prevent or reduce exposure; (4) to increase the capacity of the North Carolina Farmworkers' Project to involve community members in the documentation of environmental and occupational health risks and in education for the reduction of environmental and occupational health risks; and (5) to evaluate the process and outcomes of community participation in this project so that it can be used by other community-based organizations to engage community residents in efforts to reduce environmental risks in their own communities.

关键词：农药；环境暴露；职业安全与健康；农业工人；健康危害；安全项目；心理健康；心理影响；预防医学；社会学因素

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The primary habitat management objective for the three refuges of the Willamette Valley NWR Complex is to provide high quality forage for wintering Canada geese. To accomplish this, much of the land within the refuge is managed for grass production involving applications of herbicides, fungicides, and fertilizers. Other agrochemicals such as insecticides are applied to agricultural land outside the refuge. Some agrochemicals used in the area have the potential to enter aquatic habitats of the refuge and could impact species such as amphibians, turtles, or the federally-listed Oregon chub. The objective of this investigation was to sample both biotic and abiotic matrices and use a weight-of-evidence approach to determine if agrochemicals used on or around the refuge pose a risk to aquatic species. This investigation included seven components: 1) evaluation of pesticide use practices; 2) collection of continual water quality measurements; 3) water sampling; 4) in-situ bioassay; 5) analysis of blood plasma from carp and turtles for endocrine-disrupting compound exposure; 6) fish health assessment; and 7) fish tissue analysis for organochlorine pesticides. The components of the study were used as individual lines of evidence to evaluate risk of agrochemicals to aquatic organisms on the refuge. Multiple lines of evidence create more confidence in making decisions suitable for refuge management because the approach considers all the information gathered from the investigation. By framing the assessment with this weight-of-evidence approach, risk to the receptors of concern and organizational levels is more clearly evident and the information can be used in carrying out the Fish and Wildlife Service mission to protect and conserve natural resources.

关键词：农药；农用化学品；杀虫剂

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The use of pesticides and fertilizers contributes to U.S. agricultural productivity and helps ensure a generally stable, plentiful, and inexpensive food supply. However, these chemicals may also harm human health, water quality, and food safety. The U.S. Department of Agriculture's (USDA) National Agricultural Statistics Service (NASS) collects, analyzes, and disseminates Agricultural Chemical Usage (ACU) data to meet regulatory, business, and other informational needs. In fiscal years 2007 through 2009, NASS substantially scaled back the ACU program before restoring it in 2010. GAO was asked to examine (1) what factors NASS considered in reducing the ACU program; (2) how ACU data users were affected by the temporary cutback, and their views on the data's quality and usefulness; and (3) the extent to which agricultural pesticide and fertilizer usage data are available from sources other than NASS. GAO reviewed relevant NASS documents and interviewed NASS officials as well as 25 selected ACU data users.

关键词：农药；农产品；食品供应合作协议；数据采集；化肥

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In 1999 and 2000, the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program conducted a national pilot study of pesticides and degradates in drinking-water supplies, in cooperation with the U.S. Environmental Protection Agency (USEPA). William H. Harsha Lake, which provides drinking water for several thousand people in southwestern Ohio, was selected as one of the drinking-water supplies for this study. East Fork Little Miami River is the main source of water to Harsha Lake and drains a predominantly agricultural basin. Samples were collected from the East Fork Little Miami River upstream from Harsha Lake, at the drinking-water intake at Harsha Lake, at the outfall just below Harsha Lake, and from treated water at the Bob McEwen Treatment Plant. These samples were analyzed using standardized methods developed for the NAWQA Program. The purpose of this report is to provide information about pesticides and pesticide degradates in East Fork, Harsha Lake, and treated drinking water supplied by Harsha Lake. Water samples were collected from March 1999 to September 2000. The report presents a comparison of pesticide concentrations in untreated lake water and treated drinking water and a qualitative assessment of the effect of the November 1999 switchover from powdered activated carbon (PAC) to granular activated carbon (GAC) treatment on the concentration of pesticide compounds in treated lake water.

关键词：农药；水污染监测；饮用水；水治疗；供水水库；水文条件；气候模式；季节性模式

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The USGS is investigating the occurrence and distribution of pesticides in water resources of the Nation as part of the NAWQA Program and NASQAN. The two programs differ somewhat in their scope, objectives, and implementation plans (Gilliom and others, 1995; Hooper and others, 1997).

关键词：农药；地表水；地下水；水质；水污染

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The HHE Program evaluated surface contamination from spills of sea lamprey pesticides that occurred in the 1960s and 1970s at a biological station. HHE Program investigators took samples of carpet that were thought to have been contaminated with pesticide and took wipe samples from surfaces. Yellow stains were seen on carpet, walls, and unsealed concrete floors. The carpet had been installed over unsealed concrete. Pesticide was found on the carpet and wipe samples from areas that were visibly stained. HHE Program investigators recommended that the stained carpet be removed and that the concrete slab floor be cleaned and sealed prior to the installation of new flooring. Walls that had visible stains should be cleaned, sealed, and repainted. Investigators also measured temperature, relative humidity, carbon monoxide, and carbon dioxide and checked the heating, ventilation, and air-conditioning system in the offices and laboratory. Room air flowed from the offices into the workshop which helped keep potentially contaminated air from entering the office space. The exhaust fan in the laboratory solvent storage room was not always turned on which allowed air to flow into the nearby laboratory. This fan should be run continuously to reduce the amount of solvent vapors that can enter nearby work areas. Investigators recommended that the employer stop sampling soil and concrete that may have been contaminated during past spills. Employees were encouraged to wash their hands with soap and water after handling pesticides and avoid touching surfaces that are visibly stained. Employees should not go into offices while wearing clothes, shoes, or materials that may have pesticides on them. Investigators also recommended that the employer notify all employees about plans to renovate the building and follow up with employees after projects are completed to ensure that these activities have eliminated visible pesticide contamination on carpet, floors, and walls.

关键词：农药污染；健康危害；公共卫生；污染；生物站

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