腐殖酸理化特性及其对酸性土壤中磷有效性的影响  

Humic Acid Physicochemical Properties and its Effect on the Availability of Phosphorus in Acid Soil

作　　者：侯时季[1] 杨守军[1] 彭广霖[1] 张志芬[1] 

机构地区：[1]中国农业大学烟台研究院,山东烟台264670

出　　处：《安徽农业科学》2012年第12期7127-7129,共3页Journal of Anhui Agricultural Sciences

基　　金：中国农业大学(烟台)校级项目(yt2007.14)

摘　　要：采用土柱培养法,研究不同水平的腐殖酸与磷肥配合施用对酸性土壤中磷有效性的影响。结果表明:腐殖酸的添加能明显增加土壤的pH,降低土壤中交换性铝的浓度,提高土壤中有机质含量和阳离子交换量。腐殖酸显著改善了土壤的理化性状,利于磷素在土壤中迁移,促进土壤中磷有效性的提高。所以,腐殖酸与磷肥的配合施用是提高土壤中磷有效性的最佳选择。The incubation experiment was conducted to evaluate the influence of different level combination of humic acid and phosphorus fertilizer on the availability of phosphorus in acid soil.The results showed that adding humic acid could significantly improve soil pH value,decrease exchangeable Al concentration,increase exchange capacity between organic matter content and cation.Humic acid application could improve soil physicochemical property,promote phosphorus availability increase,and was beneficial for phosphorus movement.As a consequence,the combination of phosphorus fertilizer and humic acid is the best choice for improvement of phosphorus availability.

关 键 词：酸性土 腐殖酸 磷有效性 理化性状 迁移 

分 类 号：S154.2[农业科学—土壤学]