Soil Inorganic Phosphorus Fractions as Affected by Fertilization

Abstract:

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A fifteen-year field trial (started in 1990) was conducted to determine the inorganic P fractions under 8 classical modes of fertilization in the lower reach of Liaohe River Plain. The results showed that Ca2-P, Ca8-P, Al-P and Fe-P decreased in the absence of P application, while increased with supplemental P addition. Interestingly, O-P and Ca10-P, with low bioavailability, increased at different levels under all treatments after 15 years. The contents of inorganic P were low in crop stalk, indicating that P supplying capacity was weak. On the contrary, both fresh pig excretion and decomposed manure were huge inorganic P pools.

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Periodical:

Edited by:

Helen Zhang and David Jin

Pages:

108-111

DOI:

10.4028/www.scientific.net/AMR.322.108

Citation:

B. T. Huang et al., "Soil Inorganic Phosphorus Fractions as Affected by Fertilization", Advanced Materials Research, Vol. 322, pp. 108-111, 2011

Online since:

August 2011

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$35.00

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