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研究了不同培肥措施对冀东褐土腐殖质结合形态的影响。结果表明 ,松结态腐殖质含量及其占重组腐殖质比率和松 /紧比值是评价冀东褐土培肥效果和标志土壤肥力水平的重要指标。长期不施肥或单施常量NPK化肥 ,使土壤松结态和紧结态腐殖质均有所下降 ,松结态占重组腐殖质比率和松 /紧比值减小 ;采用有机肥 (物 )料配施常量NPK化肥 ,可明显增加土壤松、稳、紧结态腐殖质含量 ,提高松结态占重组腐殖质比率和松 /紧比值 ,使土壤腐殖质得到活化和更新 ,增强土壤供养能力 ,提高土壤肥力
The effects of different fertilization measures on the humus-binding morphology of the East China cinnamon soil were studied. The results showed that the content of loosely-ended humus and its ratio of recombinant humus and loose / tight ratio were important indexes to evaluate the effect of fertilization and the soil fertility in Jidong. Long-term non-fertilization or single application of NPK fertilizer, the soil loose knot and tight junction humus decreased, the pine knot accounted for the ratio of recombinant humus and loose / tight ratio decreases; organic fertilizer (material) with the application of constant NPK fertilizer can significantly increase soil loose, steady and tight junction humus content, increase the proportion of loosely knot in the proportion of recombinant humus and loose / tight ratio, so that the soil humus is activated and updated to enhance soil nutrient supply and increase soil fertility