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本文研究了速效磷肥及其与腐植酸钾的混合物和反应产物在土壤中培养 6 0天中磷的有效性。结果表明 ,反应产物的效果最好。其施入土壤后 10～ 15天磷就几乎不再被固定 ,6 0天中有效磷含量基本保持平稳状态 ,6 0天后比单施磷肥多 14 .6 % ,比混合物多 12 .7% ,抑制磷的固定率是混合物的 8.4倍 ,相对提高了磷肥的有效性。化学研究表明 ,反应产物水溶磷减少 ,枸溶磷增加 ,但这种枸溶磷不是简单的 Ca HPO4 ,而是以腐植酸—磷酸盐复合物的形式存在 ,这可能是反应产物在土壤中有效磷能够维持平稳状态的主要原因之一
In this paper, the effectiveness of phosphorous fertilizer and its mixture with humic acid potassium and the reaction product in soil for 60 days of cultivation was studied. The results show that the best reaction products. Phosphorus was almost no longer fixed 10 to 15 days after it was applied to the soil. The content of available phosphorus remained basically steady after 60 days. After 60 days, phosphorus was 14.6% more than the single application of phosphorus and 12.7% more than the mixture. Inhibition of phosphorus fixation rate is 8.4 times the mixture, the relative increase in the effectiveness of phosphate fertilizer. Chemical studies show that the reaction product of water soluble phosphorus decreased, citronellin increased, but this is not a simple Ca HPO4, but in the form of humic acid - phosphate complexes, which may be the reaction product in the soil effective One of the main reasons why phosphorus can maintain a steady state