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江淮丘陵地区下蜀黄土母质发育的水稻土油 稻轮作试验表明：油菜收获后土壤比试验前土壤总有机硫及碳键硫、硫酸酯和惰性硫组分含量分别下降了５１３ ％ 、６０２ ％ 、２９３ ％ 和７３４ ％ ；水稻收获后土壤比油菜收获后土壤总有机硫及碳键硫、硫酸酯和惰性硫组分含量分别增加了１２９ ％ 、３０２ ％ 、７８ ％ 和２０３ ％ 。与试验前土壤比较，油菜收获后土壤有机硫、碳键硫和惰性硫占总硫百分数分别下降了１２６ 、３２ 和１８７ 个百分点，碳键硫和惰性硫占总有机硫百分数分别下降了２３ 和１８７ 个百分点；而硫酸酯形态硫占总硫和有机硫百分数则分别增加了８９ 和２０７ 百分点。与油菜收获后土壤比较，水稻收获后土壤总有机硫、碳键硫和惰性硫占总硫百分数分别增加了７４ 、６９ 和７７ 个百分点，碳键硫和惰性硫占总有机硫百分数分别增加了７７ 和７２ 个百分点；而硫酸酯形态硫占总硫和总有机硫百分数则分别减少了２１２ 和１４９ 个百分点。与同期不种作物处理相比，油菜收获后和油 稻轮作后土壤硫酸酯形态硫含量、占总硫及占有机硫百分数分别增加１２４ 个百分点和６４１ 个百分点，７２ 和１４５ 个百分点及１０８ 和１７９ 个百?
The experiment of paddy rice with oily rice developed in the Xiazhu loess plateau in Jianghuai hilly region showed that the content of total organic sulfur, carbon bond sulfur, sulfate and inert sulfur in soil decreased 51.3% 60.2%, 293% and 734% respectively. After harvesting, the content of total organic sulfur, carbon bond sulfur, sulfate and inert sulfur in soil increased by 129%, 302%, 78% % And 203%. Compared with the pre-test soil, the percentage of total organic sulfur, carbon-bond sulfur and inert sulfur in total rapeseeds decreased 126, 32 and 187% respectively after harvesting. The content of carbon-sulfur and inert sulfur accounted for total organic sulfur The percentages decreased by 23 and 187 percentage points respectively, while the percentages of sulfur-form sulfur in total sulfur and organic sulfur increased by 89 and 207 percentage points respectively. Compared with the soil after rapeseed harvest, the total organic sulfur, carbon bond sulfur and inert sulfur in total rice after harvest increased by 74, 69 and 77 percentage points respectively, and carbon bond sulfur and inert sulfur accounted for The percentages of organic sulfur increased by 77 and 72 percentage points respectively, while the percentage of total sulfur and total organic sulfur by sulfurized forms decreased by 212 and 149 percentage points, respectively. Compared with the non-crop treatments, the sulfur content of soil sulfate forms after rapeseed harvesting and oil panicle rotation increased by 12.4% and 64.1%, respectively, and the percentage of total organic sulfur by 7.2% And 14 5 percentage points and 10 8 and 17 9 hundred?