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３４个水稻土有机硫组分研究结果表明，土壤全硫范围在１２０～３３７ｍｇ／ｋｇ。有机硫，Ｃ－Ｏ－Ｓ，和惰性硫依次占全硫的９０％～９４％、３２％～７３％和３３％～３８％。潜育型水稻土所含Ｃ－Ｏ－Ｓ量最高，几乎为旱地土壤中的２５倍。潴育型水稻土富含惰性硫。田间试验和盆栽试验多次表明，水稻土中惰性硫和Ｃ－Ｏ－Ｓ一样是作物有效硫的重要来源，惰性硫是可以活化的；土壤有机硫组分的转化因生育期、施硫水平、稻—油轮作，和根际内外等情况而不同，在根际土壤各有机硫组分的变化比在根外的活跃得多。
The results of organic sulfur in 34 paddy soils showed that the soil total sulfur ranged from 120 to 337 mg / kg. Organic sulfur, C-O-S, and inert sulfur in turn occupy 90% to 94%, 32% to 73% and 33% to 38% of the total sulfur. The latent C-O-S content of the paddy-type paddy soil is the highest, almost 2.5 times that of the dry soil. Retention paddy soil is rich in inert sulfur. Field experiments and pot experiments have shown that inert sulfur and C-O-S are important sources of available sulfur in paddy soils, and inert sulfur can be activated. , Rice-oil rotation, and rhizosphere both inside and outside the changes in the rhizosphere soil organic sulfur components more active than outside the root.