There is a relationship on soil polyphenol oxidase betweenforming of soil organic matter and medium of forming humus.
土壤多酚氧化酶与土壤有机质的形成有关，是腐殖化的一种媒介。
Totally, soil catalase and polyphenol oxidase activity increased, while soil urease activity declined in deeper soil, the extent were different among temperatures and litter types.
随着土壤深度增加，土壤过氧化氢酶和多酚氧化酶活性增大，而脲酶活性降低。
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