尿素是我国目前氮素化肥生产中的优良品种之一。它具有含氮量高(含氮量一般为46％)、适应性广、选择性小、无残留、施用方便等特点,颇受广大用户欢迎。随着尿素用量的增加,如何科学合理、经济有效地施用尿素,不断提高化肥利用率,是当前农业生产上的重要课题之一。黑龙江富裕农场积四年秋施尿素的经验,认为搞好尿素秋施要注意以下几点: 1.秋施时间黑龙江垦区尿素秋施时间一般在10月下旬 Urea is one of the best varieties of nitrogen fertilizer in China. It has high nitrogen content (nitrogen content is generally 46%), wide adaptability, selectivity, no residue, easy to use and other features, the majority of users welcomed. With the increase of urea dosage, how to apply urea economically and economically and to improve the utilization ratio of chemical fertilizers is one of the most important issues in agricultural production. Rich farm in Heilongjiang plot four years of autumn urea experience, that do a good job of autumn urea should pay attention to the following points: 1. Autumn Shi Heilongjiang reclamation urea fall Shi generally time in late October