土壤施用有机物料后重组有机质变化规律的探讨——Ⅱ.对重组有机质中腐殖质组成和胡敏酸光学性质的影响

EFFECT OF APPLICATION OF ORGANIC MATERIALS ON THE PROPERTIES OF HUMIC SUBSTANCES IN ORGANO-MINERAL COMPLEXES OF SOILS Ⅱ.EFFECT OF ORGANIC MATERIALS ON THE HUMUS COMPOSITION AND OPTICAL CHARACTERISTICS OF HUMIC ACIDS IN ORGANO-MINERAL COMPLEXES

摘要:

本文进一步探讨土壤施用有机物料后重组有机质的变化规律。测定了重组有机质中各种结合形态腐殖质组成和胡敏酸的光学性质。试验结果表明:土壤施用有机物料后,各种结合形态腐殖质的PQ¹⁾在第一年基本上下降,第二年又回升。腐殖化度降低的幅度和持续时间,与有机物料种类和用量及其分解的环境条件有关。施用有机物料还能使松、稳结合态胡敏酸的△logk和E₄/E₆提高,RF降低,光密度曲线陡度加大。

Abstract:

This paper deals with the effect of application of organic materials on improving soil fertility. Experiments showed that PQ of various kinds of combined humus, in general, dropped in first year and rised back next year after organic materials were applied. The extent and time-keeping far the decrease of humification degree depended on the sorts and amounts of organic materials applied as well as the environment conditions under which the organic materials decomposed. The △logk and E₄/E₆ of various kinds of humid acids increased, while their RF values decreased by application of organic materials. Loosely combined HA varied in a wider range than stably combined HA. materials were not only higher but also The oprical density curves in treatments of organic steeper than those in the check.