有机肥在农业生产中的作用国内外都有许多研究论证。但事实上各地方均无足够的有机肥,以满足高产作物的需要,并且,由于这类肥料运输量大、费用高,往往使其局限性应用于近距离土地上。因此,化肥的使用和生产在全世界都有了迅速的增长。我们于1987～1991年研究了较长期单施化肥对作物产量、品 The role of organic fertilizer in agricultural production There are many studies at home and abroad. However, in fact, there are not enough organic fertilizers available locally to meet the needs of high-yield crops. Moreover, because of their large amount of transportation and high costs, such fertilizers often have their limitations applied to short-term land. Therefore, the use and production of chemical fertilizers have been rapidly increasing in the world. In 1987 ~ 1991, we studied the long-term application of chemical fertilizers on crop yield and quality