In acid and alkali soil, there are mainly indissoluble bivalent or trivalent phosphates, which cannot be utilized by plants. 在酸堿性土壤中，磷主要以植物難以吸收利用的難溶性二價(jià)或三價(jià)陽(yáng)離子的形式存在。
The interrelations between acid rain and soil ecosystem are analysed.Acid rain could change soil acidity, enhance soil toxicity, reduce soil active,destroy soil structure. 酸雨能改變土壤生態(tài)系統中土壤酸堿性，增加土壤毒害，降低土壤活性，破壞土壤結構，同時(shí)土壤生態(tài)系統影響酸雨的形成和污染。
