| 土壤有机培肥后胡敏酸结构特征变化规律的探讨--Ⅰ.胡敏酸的化学性质和热性质 |
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| 引用本文： | 窦森,陈恩凤,须湘成,谭世文,张继宏.土壤有机培肥后胡敏酸结构特征变化规律的探讨--Ⅰ.胡敏酸的化学性质和热性质[J].土壤学报,1992,29(2):199-207. |
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| 作者姓名： | 窦森 陈恩凤 须湘成 谭世文 张继宏 |
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| 作者单位： | 吉林农业大学 130118;沈阳农业大学 110161;沈阳农业大学 110161;沈阳农业大学 110161;沈阳农业大学 110161 |
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| 摘 要： | 通过在棕壤、草甸土和水稻土上进行的田间和模拟试验表明,土壤有机培肥一般使胡敏酸(HA)的数均分子量、缩合度(C/H)、羧基含量和反应热下降。除草甸土外,土壤有机培肥还能使胡敏酸的氧化度(O/C)和高温与低温放热之比降低。说明胡敏酸变得简单化和年轻化。此外,施用猪粪可以增加胡敏酸的含氮量和降低酚羟基含量,玉米秸秆则相反。
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| 关 键 词： | 土壤 培肥 胡敏酸 化学性质 热性质 |
EFFECT OF IMPROVING SOIL FERTILITY BY ORGANIC MATERIAL APPLICATION (ISFOMA) ON STRUCTURAL CHARACTERISTICS OF HUMIC ACIDS IN SOILS |
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| Dou Sen,Chen Enfeng,Xu Xiangcheng,Tan Shiwen and Zhang Jihong.EFFECT OF IMPROVING SOIL FERTILITY BY ORGANIC MATERIAL APPLICATION (ISFOMA) ON STRUCTURAL CHARACTERISTICS OF HUMIC ACIDS IN SOILS[J].Acta Pedologica Sinica,1992,29(2):199-207. |
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| Authors: | Dou Sen Chen Enfeng Xu Xiangcheng Tan Shiwen and Zhang Jihong |
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| Institution: | Jilin Agricultural University, 130118;Shenyang Agricultural University;Shenyang Agricultural University;Shenyang Agricultural University;Shenyang Agricultural University |
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| Abstract: | This paper deals with the effect of organic material application on the chemical and thermal properties of HAs from brown soil, meadow soil and paddy soil in the field and incubation experiments. The results obtained are summarized as follows: In the field experiment, the number-average molecular weight(Mn) of HAs were markedly decreased by applying organic materials. For example, the Mn of HAs of CK, 18.7 (O1) and 37.4 T/ha (O2) of pig manure (PM) in brown soil were 1332, 835 and 578 zespectively. The same changes were found in other soils. PM was more effective than corn stalk (CS) in decreasing Mn of HAs in the incubation experiment. With the increase of the rate of organic materials applied. Mn of HAs decreased greatly. The Mn of HA in the incubated soil without application of organic material went up to 1768. |
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