摘要
本文通过田间和模拟试验研究了棕壤施用有机肥料对土壤胡敏酸(HA)光学性质和活化度的影响。结果表明,土壤有机培肥(ISFOM)使棕壤HA的色调系数(Δlogk)和活化度升高,相对色度(RF)下降,说明HA的分子结构简单化和脂族化。ISFOM对大粒级(50～250μm)中HA的影响较大。本文还提出了HA活化度的概念及测定方法。
This paper deals with the effect of improving soil fertility by organic materials on the optical properties and the activation degree of humic acids from brown earth in field and incubation experiments. The results are summarized as follows; the logK and activation degree increased, whereas RF value decreased under treatment, which suggested that humic acids molecule became less complex and more aliphatic. The humic acids of 50- 250 um particle fraction were more sensitive to treatment. The concept and the method for evaluating the activation degree of humic acids was also provided first in this paper.
出处
《吉林农业大学学报》
CAS
CSCD
1992年第3期47-53,共7页
Journal of Jilin Agricultural University
关键词
胡敏酸活化度
棕壤
有机培肥
土壤
Improving soil fertility by organic materials, Activation degree, optical properties
