我国是一个农业大国，肥料是一类重要的农用物资，肥料对农业增产起着重要的作用。随着我国四个现代化的飞速发展，肥料新品种的研制和科学施肥的研究也在迅速发展，未来农业给我们提出了更高的要求。为了帮助初、高中学生学好化学教材中化学肥料这一部分知识，本文系统全... China is a big agricultural country. Fertilizer is an important kind of agricultural materials. Fertilizer plays an important role in increasing agricultural output. With the rapid development of our country’s four modernizations, the research on new fertilizer varieties and scientific fertilization are also rapidly developing. In the future, agriculture will put forward higher requirements for us. In order to help junior and senior high school students learn chemical fertilizers in chemistry teaching this part of the knowledge, the system full ...