Soil Inorganic Phosphorus Fractions as Affected by Fertilization

Bao Tong Huang; Hua Zhou; Huai Xiang Ding

doi:10.4028/www.scientific.net/AMR.322.108

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Study on the Springback Characteristics of CR340LA Steel during the Typical Auto Part Stamping Process
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Ammonium Removal from Aqueous Solutions Using an Ammonium Ion-Exchange Material, the Equilibrium Study
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Soil Inorganic Phosphorus Fractions as Affected by Fertilization
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 322Soil Inorganic Phosphorus Fractions as Affected by...

Soil Inorganic Phosphorus Fractions as Affected by Fertilization

Abstract:

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.