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土壤磷酸酶是催化土壤有机磷矿化的酶，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。磷酸酶活性受到土壤碳、氮含量、有效磷含量和pH的显著影响，根据最适PH范围，一般把土壤磷酸酶分为中性、酸性和碱性三种类型。 测定原理：中性环境中，S-NP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NP活性。
Soil neutral phosphatase is an enzyme that catalyzes the mineralization of organic phosphorus in soil. Its activity directly influences the decomposition, transformation, and bioavailability of organic phosphorus in soil, making it an indicator for evaluating the direction and intensity of phosphorus biological transformation. Phosphatase activity is significantly affected by soil carbon and nitrogen content, available phosphorus levels, and pH. Based on the optimal pH range, soil phosphatase is generally classified into three types: neutral, acid, and alkaline. Assay Principle: In a neutral environment, S-NP catalyzes the hydrolysis of disodium phenyl phosphate to produce phenol and disodium hydrogen phosphate. The activity of NP is calculated by measuring the amount of phenol generated.
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