摘译自2007年7月16日ENS美国，密西根州，安娜堡报导；谢芳怡编译；蔡丽伶审校 一项最新研究结果指出，在开发中国家的单一农地上从事有机农业耕种，与在同样一块农 地上进行低度集约农业相比，有机耕种所能产生的效益是後者的3倍，这项研究结果也反 驳了长久以来认为有机耕种方式无法生产足够作物来喂饱全球人口的说法。 美国密西根大学安娜堡分校自然资源与环境学院教授，同时也是该项研究主要调查人员之 一的Ivette Perfecto教授就表示，在开发中国家，可以利用有机方式，将粮食产量增加2 到3倍。 研究人员也发现，藉用使用现有的有机肥料数量，不增加耕种用地，将绿色肥料亦即覆盖 作物犁进土壤，自然改善土壤品质，就可能提高生产效益。 由美国农业研发服务部官派科学家所进行的另一项研究则发现，比起传统不整地耕种方式 ，有机耕种促进土壤有机物质增生的成效更好。 但反对人士认为，有机食品比起其他食品较不安全，而且有可能增加人类接触生物污染或 食物中毒的风险，批评者更指出，用於有机作物的肥料可能含有人类病原体、霉菌毒素， 以及饲养家畜时添加的抗生素。 提升大家的竞争力 New Research Finds Organic Farming Can Feed the World ANN ARBOR, Michigan, July 16, 2007 (ENS) University of Michigan Associate Professor of Natural Resources Ivette Perfecto (Photo courtesy U. Michigan)Organic farming can yield up to three times as much food on individual farms in developing countries as low-intensive methods on the same land, according to new research that refutes the long-standing claim that organic farming methods cannot produce enough food to feed the global population. But in developing countries, food production could double or triple using organic methods, said Dr. Ivette Perfecto, professor at the university's School of Natural Resources and Environment, and one the study's principal investigators. The authors found that the higher yields could be accomplished using existing quantities of organic fertilizers, without putting more farmland into production, by using green manures - cover crops plowed into the soil to provide natural soil amendments. In a separate study government scientists with the U.S. Department of Agriculture's Agricultural Research Service, ARS, found that organic farming can build up soil organic matter better than conventional no-till farming. Critics argue that organic food could be less safe than other foods, because it might increase the risk of exposure to biological contaminants and food-borne diseases. Critics point out that manure used to fertilize organic crops might contain human pathogens, mycotoxins from molds, and antibiotics fed to livestock. --

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