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对不同种植年限茶园土壤有机无机复合状况及结合态腐殖质组成变化特征进行了研究。结果表明,土壤有机碳含量、重组有机碳含量以及土壤有机无机复合量随着植茶年限的增加而增加,而复合度下降,这一结果与土壤有机质的来源及移动性的差异有关。自然土壤植茶后,茶园土壤各结合态腐殖质含量明显提高,且各结合态腐殖质的绝对含量为紧结态腐殖质>松结态腐殖质>稳结态腐殖质,松结态腐殖质和紧结态腐殖质构成了复合态有机质的主体。随着植茶年限的延长,松结态腐殖质的相对含量增加,紧结态腐殖质的相对含量则表现为减少,土壤腐殖质松/紧比值增加。土壤有机无机复合状况及腐殖质结合形态与土壤养分之间存在相关关系,是表征土壤肥力演变的重要指标。
The characteristics of organic-inorganic compound and combined humus composition in different planting years of tea plantation were studied. The results showed that soil organic carbon content, organic carbon content and soil organic-inorganic composite content increased with the increase of tea planting age, but decreased with the increase of plantation age. This result was related to the difference of source and mobility of soil organic matter. After the soil was planted in natural soil, the contents of bound humus in tea plantation soils were significantly increased, and the absolute content of the combined humus was tight-junction humus> loose-junction humus> steady-state humus, loose-junction humus and tight-junction humus The main body of complex organic matter. With the extension of tea plantation age, the relative content of loosely-ended humus increased, the relative content of tight-junction humus decreased, and the ratio of loose / tight soil humus increased. Soil organic-inorganic composite status and the combination of humus and soil nutrients have a relationship, is an important indicator of soil fertility evolution.