中宁县用铁辕犁试制成功的氨水施肥犁,已在全县推广使用。现将氨水施肥犁介绍刊于此,仅供各地改制时参考。一件工具的改革,不可能一下子完美无缺的,需要有一个实践、认识、再实践、再认识的过程。因此,这种犁目前还存在一些缺点和问题的,这就需要我们在生产实践中,不断研究,不断改进提高,以使其日臻完善。 Zhongning County with iron shaft trial success of ammonia fertilizer plow, has been promoted in the county. Now ammonia fertilizer plow introduced here, only for reference when restructuring around. The reform of a tool can not be perfect at once. It requires a process of practice, understanding, practice and re-understanding. Therefore, this plow there are still some shortcomings and problems, which requires us in production practice, continuous research, continuous improvement and improvement in order to make it perfect.