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目前世界各国对新肥料品种的研究,总的趋势是朝复合、高效的方向发展,多种元素的复合肥料生产已引起各国的重视。近20—30年来西欧、美、日对复合肥料的生产应用发展较快,西欧1951年复合肥料仅占化肥16％,现在已达60％以上,印度、巴基斯坦等国复合肥料年消耗量已超200万吨以上,据统计全世界长期应用复合肥料的国家已达100多个。 近十多年,我国随着农业生产和化肥工业的发展,复合肥料的生产应用也在扩大,在棉、麻、烟、茶等经济作物上施用,已取得可喜的效果。我们针对辽西地区苹果产量低,品质差的实际问题,开展苹果复合肥料肥效的研究,本试验从1974年开始,迄今已经八年,现将研究结果整理如下:
At present, the research on new fertilizer varieties in various countries around the world has the general trend of developing towards compounding and high efficiency. The production of compound fertilizers with various elements has drawn the attention of all countries. In the past 20-30 years, the production and application of compound fertilizers in Western Europe, the United States and Japan have been developing rapidly. In 1951, the compound fertilizers only accounted for 16% of the total fertilizers in 1951, and now they have reached over 60%. The annual consumption of compound fertilizers such as India and Pakistan has surpassed More than 2 million tons, according to statistics, the long-term application of compound fertilizer in the world has reached more than 100 countries. In recent ten years, with the development of agricultural production and fertilizer industry in our country, the production and application of compound fertilizers have also been expanded. The application of economic benefits such as cotton, hemp, tobacco and tea has been achieved. We aimed at the practical problems of low yield and bad quality of apple in western Liaoning, and carried out the research on fertilizer efficiency of apple compound fertilizer. Since 1974, this experiment has been eight years, and the research results are summarized as follows: