土壤缺磷对植物生长、发育、产量和质量都有极大影响。我国多数地区土壤缺磷,而且施入的有效磷肥又常因土壤 pH 值和氧化——还原条件的变化而被固定。在南方酸性土壤中常被三价铁、铝离子固定;在北方石灰性土壤 Phosphorus deficiency has a great influence on plant growth, development, yield and quality. In most areas of our country, the soil is deficient in phosphorus, and the effective phosphate fertilizer applied to it is often fixed due to changes in soil pH and oxidation-reduction conditions. In the southern acidic soil is often ferric, aluminum ions fixed; calcareous soil in the north