长期定位不同施肥处理的棕壤腐殖酸性质的研究  

Soil Humic Acid Character in Bureazom Long-term Fertilization Treatments

作　　者：高春丽[1] 刘小虎[1] 韩晓日[1] 于成广[1] 阴红彬[1] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁沈阳110161

出　　处：《土壤通报》2006年第1期73-75,共3页Chinese Journal of Soil Science

摘　　要：以长期定位试验土样为材料，对不同施肥处理土壤腐殖质组成及性质进行研究。结果表明：通过施肥提高腐殖质的含量同时能降低胡敏酸E4／E6值，增加了胡敏酸分子的复杂程度。无机肥、有机肥和无机有机肥配施均能增加胡敏酸和胡敏素的含量。土壤不同形态胡敏索含碳量不同，不溶性胡敏索含碳量最多，占总含碳量的．47．6％～57％，铁结合态胡敏素占总含碳量的3．1％～5．7％，粘粒结合态胡敏素占总含碳量的2．0～3.7％。Based on the soil selected from long -term fixed position, the characteristics and composition of humus in different fertilized treatments were studied. The results showed： fertilization could increase the content of humus, decrease E4/E6,and improve the degree of complexity of humic acid molecule . The content of humic acid and humin increased with different inorganic ,organic and inorganic - organic fertilized. The ratio of humic acid to fulvic acid also increased. The content of carbon in humin varied with form , the un - dissolved humin is the most, the ratio of it in total carbon was 47.6% - 57% , the humin combined with iron was 3.1% - 5.7% , and combined with clay was 2.0% - 3.7%.

关 键 词：腐殖质 胡敏素 光密度 

分 类 号：S153.622[农业科学—土壤学]