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土壤磷酸酶是一类催化土壤有机磷化合物矿化的酶，其活性的高低直接影响着土壤中有机磷的分解转化及其生物有效性，是评价土壤磷素生物转化方向与强度的指标。土壤磷酸酶受到土壤碳、氮含量、有效磷含量和pH显著影响。通常按照其最适pH范围，分为碱性、中性和酸性三种类型磷酸酶。 测定原理：碱性环境中，S-AKP/ALP催化磷酸苯二钠水解生成苯酚和磷酸氢二钠，通过测定酚的生成量即可计算出S-AKP/ALP活性。
Soil phosphatase is a type of enzyme that catalyzes the mineralization of organic phosphorus compounds in soil. Its activity directly influences the decomposition, transformation, and bioavailability of organic phosphorus in soil, making it an important indicator for assessing the direction and intensity of phosphorus biological transformation in soil. Soil phosphatase activity is significantly affected by soil carbon and nitrogen content, available phosphorus levels, and pH. Typically, based on its optimal pH range, soil phosphatase is classified into three types: alkaline, neutral, and acidic phosphatase. Assay Principle: In an alkaline environment, S-AKP/ALP catalyzes the hydrolysis of disodium phenyl phosphate to produce phenol and disodium hydrogen phosphate. The activity of S-AKP/ALP is calculated by measuring the amount of phenol generated.
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