摘要
对福建几种水稻土腐殖质组成及其特性进行研究,包括其结合形态、胡敏酸与富里酸比例、胡敏酸在不同波长中的光密度、腐殖质与粘粒矿物的复合量和复合度等。结果表明,福建几种水稻土在不同熟化度、气候带、海拔高度、耕作制度、氧化还原势以及不同母质条件下,其腐殖质组成和特性差异显著,且具有一定规律性。
The humus characteristics of some types of paddy soils in Fujian Province were studied on the combinating forms,the ratio of humic acid to fulvic acid,the optical density of humic acid under different wave- lengths,and the amount and degree of complex.The results showed that the characteristics and compositions of humic substance were obviously dif- ferent from each other under various soil maturation degrees,climate zones,elevation,cropping systems,potential of oxidation-reduction and parent materials.Some specific tendencis of humus characteristics under the above circumstances were also found.
关键词
水稻土
腐殖质
组成
特性
paddy soil
humus
compositions
characteristics
