母质对新形成腐殖质的影响
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THE EFFECT OF PARENT MATERIAL ON THE NEWLY FORMED HUMUS
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    摘要:

    本文研究了在旱地和水田条件下,母质对新形成腐殖质的影响.供试物料为紫云英、绿萍、稻草和水葫芦.结果表明:1.除绿萍外,各物料腐解三年后均已分解较完全.腐解产物的C/有机N值和腐殖质组成均随原始物料而异.2.当植物物料和母质相同时,与水田条件下的相比,旱地条件下的腐解产物的C/有机N值大多较窄,中性糖量较高,六碳糖/五碳糖值较宽,腐殖酸的提取率较高.3.当水分条件和植物物料相同时,与第四纪红色粘土中的相比,下蜀黄土中腐解产物的胡敏酸的C/N值大多较窄,六碳糖/五碳糖值和胡敏酸/富里酸值大多较宽.作者认为,二者中腐殖质组成的差别在一定程度上系由于粘土矿物的组成不同所致.

    Abstract:

    The present paper deals with the composition of the newly formed humus derived from various plant materials decomposed in a Quaternary red clay and in a in a Xiashu loess for 3 years.Experiment results showed that 1.the ratio cf C/org.N and fractional humus composition of newly formed humus varied with the kinds of plant material from which it was derived:2.as compared with those formed under submerged conditions,the newly formed humus formed under upland condition had higher C/org.N and hexoses/pentoses ratios and sugar content as well as a higher extractability of humic substances;3.the newly formed humus formed in Xiashu loess had a lower C/org.N ratio,but higher HA/FA and hexoses/pentoses ratios than that in Quaternary red clay.The role of clay mineral in the formation of humic substances is discussed.

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程励励,文启孝,阮立山.母质对新形成腐殖质的影响[J].土壤学报,1987,24(2):105-110. Cheng Lili, Wen Qixiao, Ruan Lishan. THE EFFECT OF PARENT MATERIAL ON THE NEWLY FORMED HUMUS[J]. Acta Pedologica Sinica,1987,24(2):105-110.

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  • 在线发布日期: 2013-02-25
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