期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2003

29

4

322-325

10.3321/j.issn:1007-1032.2003.04.013

(95-01-001-03):国家科技攻关项目 (97-14):湖南农业大学校科研和教改项目

本校为第一机构

为了探明湖南省稻田土壤硫素状况及不同农业利用措施等对土壤硫素状况的影响，在测定全量硫和有效硫的基础上，采用李成保建议的连续提取法，测定了不同稻作制土壤各形态无机硫含量，并由差减法得出有机硫含量．结果表明，土壤中的硫以有机形态为主，约占土壤全硫的76．8％，无机态硫以吸附性硫为主，水溶性硫和盐酸可溶性硫含量相当．不同土壤层次间，A层土壤各形态硫含量最高，随着土壤剖面层次的加深，土壤各形态硫含量逐渐下降．不同稻作制间，耕层土壤有机硫含量以稻一稻一冬泡最高，稻一稻一冬绿次之，稻一稻一冬油最低；无机硫中吸附性硫含量从大到小依次为冬绿，冬油，冬泡．不同有机肥...

The sequential extraction approach advanced by Li Chengbao is applied to the study of the contents of three inorganic sulfur on the base of total S and available S. Organic S content is obtained by subtraction.The results indicate that organic S is 76.8% of total. In total inorganics,the contents of adsorbedS are the highest, followed by those of H2OS;While those of HClS are the lowest.Among 3 soil layers ,the contents of various fractions sulfur in plough layer are the highest. Among 3 ricebased cropping systems ,the organic S cont...