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目前,对化学肥料进行二次加工,发展多元复合专用肥料,是世界肥料发展的大趋势,根据FAO(联合国粮农组织)肥料年鉴的统计数字,1989年、1990年度世界发达国家以复混肥料形态的N、P_2O_5、K_2O分别占肥料消费施用总量的20.4％-87.8％、79.2％-98.3％和36.5％-99.6％,而1992年,我国复混肥料施用量占化肥总量的15.8％,尚低于世界平均水平,而且主要是依赖进口。针对上述情况以及三江平原岗平地白浆土“板、瘦、硬”的具体特点,八五二农场天华腐植酸
At present, the secondary processing of chemical fertilizers and the development of multi-purpose compound fertilizers are the general trend of development of fertilizers in the world. According to the statistics of the FAO Yearbook of Fertilizers (FAO), in 1989 and 1990, the developed countries in the world took the form of compound fertilizers N, P_2O_5 and K_2O account for 20.4% -87.8%, 79.2% -98.3% and 36.5% -99.6% of the total fertilizer consumption respectively. In 1992, the application of compound fertilizers in China accounted for 15.8% of the total amount of fertilizer, Still below the world average, and mostly dependent on imports. In response to the above situation and the specific characteristics of “slab, lean and hard” white clay in Gangping Plain in the Sanjiang Plain, 852 farms of Tianhua Humic Acid