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以山东省典型高产粮区———桓台、滕州、寿光土壤为试材 ,研究了高产粮田土壤腐殖质组成特征与中低产田的差异及影响因素。结果表明 :高产粮田有机碳含量为 7.2 2～ 1 4 .2 2g/kg ,平均 9.87g/kg ;腐殖酸碳 2 .0 8～ 3.0 5g/kg ,平均 2 .48g/kg ,其中胡敏酸碳 0 .92～ 1 .5 7g/kg ,富里酸碳 0 .99～ 1 .70g/kg ,胡敏酸碳与富里酸碳比值 (HA/FA)为 0 .6 3～ 1 .31 ;有机碳约是腐殖酸碳的 4倍 ;中低产田各组份平均含量低于高产田而变异系数大于高产田 ;土壤速效氮磷钾对腐殖质各组份都有影响 ,但对HA/FA比值影响最大的是碳酸钙和pH。
Taking Huantai, Tengzhou and Shouguang soils, typical high-yielding grain-producing areas in Shandong Province, as test materials, the differences and influencing factors between humus composition characteristics and middle- and low-yielding fields were studied. The results showed that the organic carbon content in high-yield grain was 7.22-1.22g / kg, average 9.87g / kg; humic acid carbon 0.08-3.05g / kg, average 2.48g / kg, Sensitive carbon 0.92 ~ 1.57g / kg, fulvic acid 0.99 ~ 1.70g / kg, humic acid carbon and fulvic acid carbon ratio (HA / FA) of 0.63 ~ 1.31 ; Organic carbon is about 4 times that of humic acid carbon; the average content of each component in middle and low yield field is lower than that in high yield and the coefficient of variation is higher than high yield; the available nitrogen, FA ratio is most affected by calcium carbonate and pH.