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在我省当前农业生产中,尿素和硝铵是主要的氮肥肥料。为摸清尿素和硝铵施用后氮素在土壤中的去向及探索提高其利用率的途径,我们于1988年通过网室盆栽试验,利用同位素~(15)N示踪的方法对黑土施用尿素和硝铵后氮素的去向进行了研究,现将结果报告如下。
In the current agricultural production in our province, urea and ammonium nitrate are the main nitrogen fertilizers. In order to find out the orientation of nitrogen in soils and explore ways to improve its utilization rate after application of urea and ammonium nitrate, we passed the pot experiment of net house in 1988 and applied the method of isotope ~ (15) N tracer to the application of urea And ammonium nitrogen after the fate of nitrogen were studied, the results are reported as follows.