摘要
探讨了温度对Ｏｌｓｅｎ法测定潮土速效磷的影响，结果表明，提取温度和速效磷浸出量之间呈极显著正相关，这种影响又与土壤速效磷贮量有关。根据统计分析得出比率（）与温度之间的有关参数，确定了包含土壤磷素水平影响在内的１０～３０℃温度范围的经验校正式：Ｐ２５＝Ｐｔ（Ａ＋Ｂｔ），经检验，不同土样任意温度下测定值的校正值与２５℃时测定值无显著差异，符合试验要求。
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℃
出处
《华北农学报》
CSCD
北大核心
1995年第3期109-114,共6页
Acta Agriculturae Boreali-Sinica
关键词
潮土
速效磷
OLSEN法
温度校正
磷肥
Chao soil
Available Phosphorus
Olsen method
Temperature correction
