Discussion on the Influence of Temperature in Testing Available Phosphorus in Chao Soil by Olsen Method and Its Correction

doi:10.3321/j.issn:1000-7091.1995.03.023

Abstract

Abstract: This paper discussed the influence of temperature in testing the available-p in Chao soil by Olsen method. The results showed that singificant correlation existed between extracting temperature and extraction quality of available-p, and this relation was effected by the reserves of available-p in soil. According to the statistics,the parameter between the rate of P,,/P, and the temperature was analyzed, and the correcting equation of P2, = Pt (A +Bt) was chained, which was influenced by phosphate level in soil in the temperature range of 10C to 30^’℃ Through examination, the corrected testing value of each soil sample in different temperature was almost the same as it at 25℃

Key words: Chao soil, Available Phosphorus, Olsen method, Temperature correction

CLC Number:

S153

Zhang Hehang, Shi Jun. Discussion on the Influence of Temperature in Testing Available Phosphorus in Chao Soil by Olsen Method and Its Correction[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(3): 109-114. doi: 10.3321/j.issn:1000-7091.1995.03.023.

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