Characteristics of Organo—Mineral Complexing of Microaggregates in Paddy Soils Developed

Characteristics of Organo—Mineral Complexing of Microaggregates in Paddy Soils Developed from

Purple Soils

WEICHAOFU;XIEDETI;等

【期刊名称】《土壤圈：英文版》 【年(卷),期】1996(006)004

【摘要】This paper deals with characteristics of organo-mineral complexing of microaggreagtes in the paddy soils developed from purple soils in Sichuan,China,Results show that the contents of orgainc matter in microaggreagates are in the order of 1-0.25mm>smaller than 0.05mm>0.05-0.25mm,But

the

organic

matter

in

1-0.01mm

microaggregates accounts for 68.1%-78.7% of that in soil.The organic matter in <0.05mm microaggregates is complexed humus on the whole,of which the degree of organo-mineral complexing varies between 96.1% and 99.5%,which is higher than that of the soil or >0.05mm microaggregates.The contents of loosely combined humus and the ratios of loosely and tithtly combined humus markedly decline with the size of microaggregates.Fresh soil humus formed from semi-decomposed organic material or organic manure added is combined first with<0.001mm clay,and then aggregated with other organic and mineral particles to form larger microaggregates,in which the aging of humus happens at the same time,whereas organic matter of the light

fraction is mainly involved in the formation of >0.05mm microaggregates. 【总页数】8页(365-372)

【关键词】紫色土发育水稻土;团聚体;小颗粒;有机－无机配位 【作者】WEICHAOFU;XIEDETI;等 【

作

者

单

位

】

CollegeofResourcesandEnvironment,SouthwestAgriculturalUniversity,CHongqing630716,China;CollegeofResou 【正文语种】英文 【中图分类】S155.42 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_soil-circle-english-version_thesis/0201268289525.html 【相关文献】

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