The status of inorganic and organic phosphorus in some soils in relation to plant availability
The status of inorganic and organic phosphorus in some soils in relation to plant availability
复制标题
一些土壤中无机磷和有机磷的状况与植物可用性的关系
DOI：
10.1080/00380768.1997.10414765
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发表时间：
1997
影响因子：
2
通讯作者：
N. Ae
中科院分区：
文献类型：
--
作者：
T. Otani;N. Ae
摘要在低肥力土壤中，木豆、花生和旱稻能够吸收少量的可溶性磷。我们检测了旱地土壤中存在的磷形态，以研究这些植物的磷吸收机制。常采用Chang和Jackson(CJ)分级法测定土壤中的磷状况。在日本，已为安多索尔开发了Sekiya方法。用这两种方法对三种酸性土壤进行了分级，并测定了钙、铝、铁三种形态中有机磷和无机磷的含量。在本实验中，在分馏过程中，两种方法都发生了提取的P向下一组分的移动。CJ法和Sekiya法在非透光性安多沙土和黄壤上也得到了类似的结果。然而，与Sekiya方法相比，CJ方法高估了钙结合部分中有机和无机P的含量，而Sekiya方法则高估了氨基安多索的含量。分馏U..。
Abstract Pigeonpea, groundnut, and upland rice are able to take up sparingly soluble phosphorus (P) in low fertility soils. We examined the P forms present in the upland soils in order to study the P uptake mechanisms of these plants. The Chang and Jackson (CJ) fractionation method is commonly applied for determining the P status in soils. In Japan, the Sekiya method has been developed for Andosols. Three acid soils were fractionated according to the two methods, and the contents of both organic and inorganic P in the calcium-, aluminum-, and iron-fractions were determined. In this experiment, a shift of extracted P into the next fraction during the fractionation procedure occurred in both methods. Similar results were obtained with both the CJ and Sekiya methods in a non-allophanic Andosol and a Yellow soil. However, the CJ method overestimated the content of both organic and inorganic P in the calcium-bound fraction, compared to the Sekiya method in the case of an allophanic Andosol. The fractionation u...