摘要
本文研究水热条件渐变的地带性土壤中Ｇ＿１、Ｇ＿２组胶散复合体有机、无机物的化学组成及其结合特点。结果表明：Ｇ＿２组中铁有积累现象，游离态铁、铝氧化物含量为Ｇ＿２＞Ｇ＿１，但均随土壤类型变化。松结态腐殖质（Ｈ＿１）为Ｇ＿１＞Ｇ＿２，紧结态腐殖质（Ｈ＿３）则为Ｇｉ＜Ｇ：。可提取腐殖质中，松、稳结态腐殖质之比值Ｈ＿１／Ｈ＿２和胡敏酸、富里酸之比值ＨＡ／ＦＡ，除个别上壤之外，都相差不大。Ｇ＿１、Ｇ＿＠两组复合体中都含有一定数量的络合态铁、铝和钙。初步认为Ｇ＿２中腐殖质总量及胡敏素量均高于Ｇ＿１，但不能区分为钙键复合体和铁铝键复合体。
This paper deale with the chemical
composition of organic and inorganic comp-onents and their combined characteristics in G_1
and G_2 organo-mineral complexes. Itwas found that iron tended to accumulate in G_2 fraction.
The contents of free Feand Al oxides were bigher in G_2 than in G_1 in all soil sainples. The
loosely combi-ned humus(H_1) was more in G_1 than in G_2, but an opposite trend existed for
tigh-tly combined liumus (humin). A little differences of the ratios of loosely combinedhumus to
stably combined humus(H_1/H_2) and humic acid to fulvic acid(HA/FA)were observed between
G_1 and G_2 fractions in most of tbe soil sainples. Both G_1 andG_2 fractions contained some
complex Fe,Al and Ca. It was concluded that the totalaznount of huinus and humin of G_2 was
higher than that of G_1, but G_1 and G_2 organo-mineral complexes could not be regarded as
Ca-combined and Fe and Al-combinedcoinplexes, respectively.
出处
《土壤学报》
CAS
CSCD
北大核心
1994年第1期26-33,共8页
Acta Pedologica Sinica
基金
国家自然科学基金
中国科学院土壤圈物质循环开放研究实验室基金
