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尿素是深受群众欢迎的化肥品种之一,近年来使用量迅速增加。多年来,由于尿素的使用方法不合理,氮素利用率低,损失较大,据全国同位素试验统计,利用率仅为27％,我们的试验结果为30～45％,也就是说,施入田间的尿素有一半以上浪费。如何采取相应措施,改进施肥技术,把利用率提高到60～70％,是亟待解决的问题。七十年代中期,我们曾在全省范围内进行尿素特性研究,在此基础上,近年来在宁镇丘陵地区进行了改进尿素使用技术研究,探讨提高尿素增产效益的途径。
Urea is one of the popular varieties of fertilizers, which has been rapidly increasing in recent years. Over the years, due to the unreasonable use of urea, nitrogen utilization rate is low, the loss is greater, according to the national isotope test statistics, the utilization rate was only 27%, our test results for 30 to 45%, that is, More than half of the waste of urea in the field. How to take appropriate measures to improve fertilization technology, the utilization rate increased to 60 to 70%, is an urgent problem to be solved. In the mid-1970s, we conducted a study on the characteristics of urea in the whole province. On this basis, we studied the use of urea in the hilly area of Ningzhen in recent years and explored the ways to increase the yield of urea.