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在进入土壤的植物残体和施入的有机肥料中,含有一定数量的蛋白物质.土壤蛋白酶能对这类物质进行酶促分解,从而对土壤的氮素转化及作物的氮素营养起着重要的作用.许多学者曾用土壤蛋白酶的活性强度来表征土壤的氮素状况及其转化进程.在测定土壤蛋白酶活性时,常用胳朊、白明胶和某些肽类作为基质.蛋白酶的活性,可根据基质的分解产物的量或其物理特性的变化测知.目前较为通用的方法有荷夫曼(Hoffmann)法、洛美科(Pомеико)法和加勒斯江(галстян)法.
In plant residues entering the soil and applied organic fertilizers contain a certain amount of protein material Soil protease can enzymatic decomposition of such substances, which is important for soil nitrogen transformation and crop nitrogen nutrition Many scholars have used the activity of soil protease to characterize the status of soil nitrogen and its transformation process.While in the determination of soil protease activity, commonly used prion, gelatin and some peptides as matrix.Protease activity, According to the amount of decomposition products of the matrix or the change of its physical properties, Hoffmann, Pomerania and Gary methods are currently used.