不同类型土壤腐殖质组分的研究

为研究各类型土壤的肥力差异,依据Pallo分组法,初步分析了黑土、草甸土、风沙土、棕壤、暗棕壤、水稻土、黑钙土等7种土壤的腐殖质组成和性质。结果表明:7种土样的腐殖质组成中,均以胡敏素的有机碳的相对数量为最高,风沙土和棕壤中,富里酸的有机碳的相对数量则大于胡敏酸的有机碳的相对数量。7种土样的腐殖化程度从高到底依次为:草甸土>黑土>黑钙土>水稻土>暗棕壤>风沙土>棕壤。各土样胡敏酸的分子复杂程度和化学稳定性的序列为:草甸土>黑土>暗棕壤>黑钙土>风沙土>水稻土>棕壤。各土样中富里酸的分子复杂程度和化学稳定性的序列为:暗棕壤>黑钙土>风沙土>黑土>草甸土>棕壤>水稻土。

STUDIES ON HUMUS FRACTIONS FROM DIFFERENT SOIL

In order to study the nutrition of difficent soil, dividing into groups law according to Pallo, preliminary research black earth , grassy marshland soil , sand blown by the wind soil , brown earth , dark brown earth , rice soil , chernozem 7 humus of soil make up and nature. The result shows: in the humus of kind of 7 kinds of soil makes up , regard relative quantity of the quick and plain (HM ) organic carbon of moustache as highest . Among sand blown by the wind soil and brown earth, getting sour organic relative quantity of carbon greater than moustache quick getting sour organic relative quantity of carbon in being rich. Soil of grassy marshland >black earth >chernozem >rice soil >dark brown earth >sand blown by the wind soil >brown earth. Passing the finding, 7 kinds of soil and a kind of molecule complexity with quick and sour (HA ) moustache and array of chemical stability are: Soil of grassy marshland >black earth >dark brown earth >chernozem >sand blown by the wind soil >rice soil> brown earth. Whether every soil kinds of China Rich getting sour molecule complexity and array of chemical stability. Dark brown earth >chernozem >sand blown by the wind soil >black earth >soil of grassy marshland >brown earth >rice soil.