关键词: 施肥, 施肥, 蔬菜地土壤, 最佳施氮量, 土壤硝态氮, 土壤铵态氮

Abstract:

In eastern region of Hainan, collected the soil samples of Areca catechu garden in different years and different regions. Using the titration method and colorimetry, it was determined for catalase, urease, polyphenol oxidase, dehydrogenase, acid phosphatase, protease, reductase, and cellulose-decomposing enzymes.The results showed that: The soil enzyme of antithesis area larger than root zone is catalase, urease, polyphenol oxidase, reductase, cellulose-decomposing enzyme. The soil enzyme of antithesis area larger than garden area is catalase, polyphenol oxidase, reductase. The soil enzyme of root zone larger than antithesis area is protease. The soil enzyme of root zone larger than garden area is the acid phosphatase enzyme, protease.Root zone soil enzyme of 12 years more than 24 years is catalase, urease, acid phosphatase, reductase.Root zone soil enzyme of 24 years more than 12 years is the protease, cellulose-decomposing enzyme.