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采用适于研究石灰性土壤中锌形态的分组方法,利用盆栽试验研究锌在土壤中的动态及有效性。结果表明,水溶性锌施入土壤后,大部分(77%以上)迅速转化为碳酸盐结合态和三二氧化物结合态,前者又向残渣态转化。种植玉米可促进碳酸盐结合态和三二氧化物结合态向残渣态转化;土壤各组分锌之间存在着相互转化、相互依赖的平衡关系。本文同时对各种形态锌的有效性提出了某些看法。
A pot experiment was conducted to study the dynamics and availability of zinc in soils using a grouping method suitable for studying the zinc forms in calcareous soils. The results showed that after the water-soluble zinc was applied to the soil, most of them (more than 77%) were rapidly converted into carbonate-bound and tri-dioxide-bound, and the former was converted to the residue. Planting of maize promoted the conversion of carbonate-bound and tri-oxide bounds to the residue; there was a reciprocal and interdependent equilibrium between zinc in the various components of soils. In the meantime, some opinions on the validity of various forms of zinc are put forward.