黑龙江省国营农场是我国重要的商品粮基地,化肥施用水平较高。当前所施用的氮肥,主要是尿素。所以,合理施用尿素是生产上的重要课题。尿素含氮量高,粒径适中,造粒均匀,坚实度强,散落性好,适于大面积机械化施用。施于各种作物,增产显著。目前尿素施用方法追肥居多,部分生产单位对尿素性质缺乏足够认识,造成了一些不必要的损失。为此,根据当地土壤气候条件,结合栽培技术措施,研究了尿素挥发损失。其结果如下。 State-owned farms in Heilongjiang Province are important commodity grain bases in China with a high level of fertilizer application. The current application of nitrogen fertilizer, mainly urea. Therefore, the rational application of urea is an important issue in production. Urea nitrogen content, moderate particle size, uniform granulation, solidity, good scattered, suitable for large areas of mechanized application. Apply to a variety of crops, yield significant. At present, urea is mostly applied in topdressing, and some production units lack sufficient knowledge of the nature of urea, resulting in some unnecessary losses. To this end, according to the local soil and climatic conditions, combined with cultivation techniques and measures of urea volatilization loss. The result is as follows.