Effects of previous elemental sulfur applications on oxidation of additional applied elemental sulfur in soils
文献类型: 外文期刊
第一作者: Li, ST
作者: Li, ST;Lin, B;Zhou, W
作者机构:
关键词: soil;elemental sulfur;oxidation rate;sulfur fertilization
期刊名称:BIOLOGY AND FERTILITY OF SOILS ( 影响因子:6.432; 五年影响因子:6.332 )
ISSN: 0178-2762
年卷期: 2005 年 42 卷 2 期
页码:
收录情况: SCI
摘要: Oxidation of elemental sulfur ( S-0) in 20 Chinese agricultural soils was tested and the effects of previous S0 applications on the oxidation of additional applied S0 in selected soils were investigated using laboratory, greenhouse, and field experiments. Results showed that sulfur oxidative capacities presented great variability among 20 tested soils, with a coefficient of variation of 92.4%. There were no significant relationships between S-0 oxidation and physical and chemical properties of the selected soil. Previous S-0 amendment significantly increased the oxidation rate of additional applied S-0. These stimulatory effects after the first applications of S-0 were greater than those after two applications. The percent increase in S-0 oxidation rate due to S-0 pretreatment was negatively correlated with the oxidation capacities of soils before S-0 pretreatments. The significant reduction of sulfur oxidation in autoclaved soils and significant increase in S-0 oxidation after inoculation with S-0-treated soil suspension demonstrated that microbial oxidation was mainly responsible for the enhancement of soil oxidation ability after previous S-0 amendments.
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