磷肥在潮褐土中动态转化及其影响因素的研究

Study on the transformation of applied P and its influence factors in the meadow-cinnamon soil.

利用培养及微区试验研究P肥施入潮褐土后的动态转化及其影响因素表明,施肥初期土壤中除难溶性Ca_(10)-P外,各无机P组分均有不同程度地提高,随着时间的延续各组分间的相互转化呈一定规律。种植作物直接影响P肥动态转化的方向。

Incubation and micro-field plot experiment were carried out to study the transformation and is influence factors of applied P in the meadow-cinnamon soil in Hebei Province. The results indicated that all the other in-organic phosphorus factors were formed except Ca10-P in the initial stage of application, but with the process of time,there is a law of transformation among these factors. Planting crops seriously affected the transformation of applied P.