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长期以来,进口尿素在宣传上和农民心理上占优势,销售价格高于国产尿素。为比较国产尿素与进口尿素的技术条件和肥效,对其含氮量、缩二脲和水分含量及粒级作了测定分析,并在小麦上进行了肥效比较试验。 试验方法 国产尿素采用南京栖霞山化肥厂的产品,进口尿素采用南斯拉夫、苏联、罗马尼亚、意大利等四个国家的产品。设亩施不同产地尿素25公斤和不施
For a long time, the imported urea and the farmer in the propaganda psychological advantage, the selling price is higher than domestic urea. In order to compare the technical conditions and fertilizer efficiency of domestic urea and imported urea, the content of nitrogen, biuret, moisture content and grain size were determined and analyzed, and the comparative experiments of fertilizer efficiency were carried out on wheat. Test method Domestic urea Nanjing Qixiashan fertilizer plant products, imports of urea Yugoslavia, the Soviet Union, Romania, Italy and other four countries products. Mushi Shi set different sources of urea 25 kg and not applied