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随着化学工业的发展和农业现代化水平的提高,无机化肥的施用已经由单一型向复合型进而向针对性更强的专用型发展。近十几年来专用肥料受到日益广泛的重视,发展很快。据FAO统计,五十年代末(1959/60年度)全世界消费化肥2713万吨(N+P_2O_5+K_2O),其中复肥形态的N+P_2O_5+K_2O分别占13.2％,13.7％,9.9％。但西欧各国和美国施用的复肥比例已达50％左右。近几年,以1981/82年度为例,全世界消费化肥达1.15亿吨,其中各种复肥约占50％。发达国
With the development of the chemical industry and the improvement of the level of agricultural modernization, the application of inorganic fertilizers has evolved from a single type to a complex type to a more targeted type. Over the past decade special fertilizer by the increasingly widespread attention, the rapid development. According to FAO statistics, there are 27.13 million tons (N + P_2O_5 + K_2O) of fertilizer consumed in the world in the late 1950s (1959/60), of which N + P_2O_5 + K_2O in the forms of compound fertilizer accounts for 13.2%, 13.7% and 9.9% respectively. However, the proportion of compound fertilizers applied by Western European countries and the United States has reached about 50%. In recent years, taking 1981/82 as an example, the world consumes 115 million tons of chemical fertilizers, of which about 50% is various types of compound fertilizers. Developed countries