过去50年,由于无机化肥的使用,农药对病虫害及杂草的有效防治和新作物品种的开发,使发达国家作物产量迅速提高。然而这种农业模式使用了大量化学药品。如果不实施新的低投入措施,肥料和农药的使用量将继续增长。这种集约耕作方式及大量施用化学药品产生了各种各样的经济、环境及生态问题。 Over the past 50 years, due to the use of inorganic fertilizers, the effective prevention and control of pests and weeds by pesticides and the development of new crop varieties have rapidly increased crop yields in developed countries. However, this model of agriculture uses a large amount of chemicals. The use of fertilizers and pesticides will continue to grow without implementing new low-cost inputs. This intensive farming approach and the extensive use of chemicals have created a variety of economic, environmental and ecological problems.