%0 Journal Article
%T Effect of corn straw on the fraction variation and properties of humic acid in lousoil during different decaying periods<br>不同腐解期玉米秸秆对塿土胡敏酸基本性质及级分变异的影响
%A WANG Xudong
%A HU Tiantian
%A ZHANG Yiping
%A <br>王旭东
%A 胡田田
%A 张一平
%J 生态学报
%D 2001
%I 
%X On the basis of studying the properties of humic acid in the soil with application of corn straw in different decaying time, the alcohol precipitation technique was used for classifying soil humic acid into 7 fractions and the fraction composition of humic acids and their properties were researched. The results showed that the type of humic acid changed from type A to B and then to A during the whole decaying periods of corn straw. Humic acid changed from complex to simple and then to complex again. The fractional composition of humic acid differed as the decaying time going on. The process of renewal of humic acid by corn straw has two direction , One was that it made the complex fractions become simple ,and the other was that some small molecular humic acid condensed from type R p to P then to A as the time going on.
%K corn straw
%K humic acid
%K fractional\|variation<br>玉米秸秆
%K 胡敏酸
%K 级分变异
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=7DC9EC3D0B3FB7AD&yid=14E7EF987E4155E6&vid=659D3B06EBF534A7&iid=B31275AF3241DB2D&sid=BB44F42BE8AE7430&eid=E1034A3BCFB43055&journal_id=1000-0933&journal_name=生态学报&referenced_num=1&reference_num=11