土壤是农业的基础,肥料是植物的粮食。土、肥是发展农业生产的两大基本条件。随着农业生产的不断发展,随着盐碱土壤的逐步改良,肥力问题日益突出,已上升为我们发展农业生产的主要矛盾。而在一些盐碱轻、肥力低的地区,肥力问题长期以来就是农业低产 Soil is the basis of agriculture, and fertilizer is the food of plants. Soil and fertilizer are two basic conditions for the development of agricultural production. With the continuous development of agricultural production, with the gradual improvement of saline-alkali soil, the issue of fertility has become increasingly prominent and has risen to become the major contradiction in our development of agricultural production. In some areas where salinity is low and fertility is low, the problem of fertility has long been a problem of low-yielding agriculture