长期施肥对褐土有机无机复合性状演变及其与肥力关系的影响  

The Effect of Long-term Fertilization on the Relationship between the development of Organic-Mineral in Cinnamon Soil and Soil Fertility

作　　者：韩志卿[1] 张电学[1] 陈洪斌[1] 常连生[1] 于玉桥[1] 刘东强[1] 王介元[1] 

机构地区：[1]河北科技师范学院农学系,河北昌黎066600

出　　处：《土壤通报》2004年第6期720-723,共4页Chinese Journal of Soil Science

基　　金：河北省科委"九五"重点攻关计划(96220916D-4)

摘　　要：通过8年长期定位试验,研究了不同施肥方式对褐土有机无机复合状况及腐殖质结合形态的影响。结果表明,长期不施肥使土壤有机碳、重组有机碳、原土复合量、松结态和紧结态有机碳含量明显下降,松/紧值降低,原土复合度上升;长期单施常量NPK化肥有同样的趋势;长期单施增量NPK化肥可大体保持土壤肥力水平不下降,但成本较高;采用有机肥(物)料配施常量NPK化肥,可明显提高土壤有机碳、重组有机碳含量和原土复合量以及土壤松、稳、紧各级结合态有机碳含量,增加松结态占重组有机碳比率,提高松/紧值,增强土壤调控能力。土壤有机无机复合状况及腐殖质结合形态是评价褐土培肥效果和标志土壤肥力演变的重要指标。Effeet of an 8 years experiment with different kinds of fertilizer application treatments on organic-mineral complex and humus united pattern was conducted. The results showed that under long-term no fertilization the content of soil organic matter, heavy humus, complex amount of native soil, loose and tight humus decreased. The same tendency showed with long-term application of chemical NPK fertilizer alone. Under long-term organic manure together with constant NPK fertilizer, soil organic matter, heavy humus, complex amount of native soil and loose, stable and tight humus increased significantly , and also the proportion of loose united humus to heavy humus and the ratio of loose to tight united humus increase. The organic-inorganic complex and humus united pattern were important indices of soil fertility.

关 键 词：土壤有机质 褐土 有机无机复合性状 腐殖质结合形态 施肥 

分 类 号：S158.5[农业科学—土壤学] S153.6[农业科学—农业基础科学]