理论联系实际是中学化学教学中值得研究的一个重要课题。国家教委最近颁布的《全日制中学化学教学大纲》指出:“在教学过程中,要十分注意联系实际,以便学生更好地掌握所学的知识和技能,以及这些知识和技能在工农业生产、第三产业、科学技术和日常生活中的应用。”化学教学联系实际的范围非常广泛,本文只能就联系农业生产实际问题进行一些探讨。 The connection between theory and practice is an important subject worth studying in chemistry teaching in middle schools. The “Full-time High School Chemistry Syllabus” promulgated by the State Education Commission recently pointed out: “In the process of teaching, we should pay great attention to connecting with the reality so that students can better master the knowledge and skills they have learned and how they can be used in industrial and agricultural production, Tertiary industry, science and technology and daily life. ”The scope of chemistry teaching is very extensive. Only a few discussions can be made on the practical problems of contacting agricultural production.