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随着尿素工业生产的日益发展,我省农田施用尿素的面积和数量都有大幅度增长。由于尿素的物理性状良好,有效成份含量高,施用方便,所以深受农民欢迎。但是,尿素的化学性质及其在土壤中的转化特点,群众是不很了解的,往往因施用方法不当,造成氮素的大量损失,发生烧苗和浓度障碍引起减产的现象。为了提
With the continuous development of urea industrial production, the area and quantity of urea applied to farmland in our province have increased substantially. Because of the good physical properties of urea, high content of active ingredients, easy to apply, so welcomed by farmers. However, the chemical properties of urea and its conversion characteristics in the soil, the masses are not very understanding, often due to improper application methods, resulting in a large loss of nitrogen, burning seedlings and concentration disorders caused by the phenomenon of yield reduction. To mention