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我们用五、六十种土壤(包括不同层次在内),进行渍水和加有机物质等不同处理,经室温培育,使之造成不同的氧化还原状况。用铂电极为指示电极,大面积的银—氯化银或饱
We use fifty or sixty soils (including different levels) for different treatments such as waterlogging and organic matter, and are incubated at room temperature to cause different redox conditions. With platinum electrode as the indicator electrode, a large area of silver - silver chloride or full