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尿素是应用最广、销量最多的一种氮肥,但我国尿素的利用率不高,一般只有35%左右,利用率不高不仅影响尿素的肥效,而且还会造成环境污染。因此,如何提高尿素利用率成为亟待研究的问题。七十年代以来,我国在脲酶抑制、硝化抑制方面进行了大量研究,筛选出多种脲酶抑制剂,目前涂层尿素已走向市场大面积应用。利用腐植酸与尿素反应制备腐植酸尿素工厂化生产,国内尚未见
Urea is the most widely used and the most widely sold nitrogen fertilizer. However, the utilization rate of urea in China is not high, generally only about 35%. The low utilization rate not only affects the urea efficiency, but also causes environmental pollution. Therefore, how to improve urea utilization has become an issue to be studied urgently. Since the seventies, our country in the urease inhibition, inhibition of nitrification conducted a large number of studies, screening a variety of urease inhibitors, coated urea has been applied to large areas of the market. The use of humic acid and urea reaction humic acid urea factory production, the country has not yet seen