张家界植烟土壤的有机无机复合状况及其与土壤养分的关系  

Status of Organo-mineral Complex in Tobacco-growing Soil from Zhangjiajie City and Its Relationship with Soil Nutrients

作　　者：李明德[1] 吴小丹[1] 吴海勇[1] 刘琼峰[1] 彭德元 

机构地区：[1]湖南省土壤肥料研究所,湖南长沙410125 [2]湖南省烟草公司张家界市公司,湖南张家界427000

出　　处：《湖南农业科学》2012年第3期34-37,共4页Hunan Agricultural Sciences

基　　金：湖南省烟草专卖局项目(10-13Aa07;08-10Aa02)

摘　　要：用傅积平改进法测定了张家界植烟土壤的有机无机复合状况,并分析了其与土壤养分的关系。结果表明:腐殖质的结合形态主要以松结态和紧结态为主,稳结态腐殖质含量最少;土壤复合量与松结态腐殖质、紧结态腐殖质和有机质均呈极显著正相关,有机无机复合度仅与有机质呈显著负相关。3种结合态腐殖质中,松结态与土壤养分(全氮、全磷和有机质)的相关性最高,土壤全钾与腐殖质没有明显的相关性。松结态腐殖质主要是铁、铝键结合的腐殖质,稳结态腐殖质则主要是钙键结合的腐殖质。腐殖质不同形态与土壤pH值、阳离子交换量(CEC)、交换性钙、交换性镁、有效硫和有效铁之间都有着密不可分的联系。Status of organo-mineral complex in the tobacco-growing soil from Zhangjiajie city was determined by FU Ji-ping modified method, and its relationship with soil nutrients was analyzed. The results showed that the combined humus form in soil mainly was tightly-combined form and loosely-combined formed, and the content of stably-combined humus was the least. The content of soil complexes was positively related to loosely-combined humus, tightly-combined humus and soil organic matter. There was a negative correlation between the organo-mineral e0mplexing degree and soil organic matter. Among the three types of humus, loosely-combined humus was the most closely related to soil nutrients （total N, total P and organic matter）. Loosely-combined humus mainly was Fe/Al-bound complex; and stably-combined humus mainly was Ca-bound complex. The different forms of humus all closely related to soil pH, cation exchange capacity （CEC）, exchangeable calcium, exchangeable magnesium, available S and available Fe.

关 键 词：植烟土壤 有机无机复合 结合态腐殖质 土壤养分 

分 类 号：S572.06[农业科学—烟草工业]