植物营养与肥料学报2015，Vol.21Issue(6)：1652-1656,5.DOI:10.11674/zwyf.2015.0633
长期定位施肥紫色土无机硫形态变化
Variation of inorganic sulfur forms under long-term fertilization in purple soil
摘要
Abstract
[Objectives] A field experiment was established in 1991 in the Long-term Monitoring Network of Purple Soil to investigate effects of long-term fertilization on sulfur ( S) with different forms in the soil .The soil samples were collected from the topsoil(0-20 cm) that were treated with no fertilizers (CK), nitrogen, phosphorus and potassium fertilizers(NPK), organic manures(M), NPK plus organic manures (NPKM) and no cultivation (F).[Methods] The samples were successively extracted to determine the contents of H 2 O-S, absorbed-S, HCl-S and total S which were analyzed by the barium turbidity method .[Results] The contents of soil total S was increased by 65.42 mg/kg in NPKM compared with the origin samples , while the ratio of available S in NPKM was lower than that in NPK.The content of soil adsorbed-S was improved by 177.4%and 93.3%in NPKM and M compared with the origin samples.Compared with the origin samples , the H2 O-S contents of all treatments were decreased by in a range of 0.87-1.38 mg/kg.The content of HCl-S was increased by 161.7%in NPK.[Conclusions] The long-term NPK fertilization and NPK plus manure fertilization could significantly increase the availability of S in purple soil, and the NPKM treatment is in favour of S accumulation in soil .In addition, the results from the long-term experiment indicate that the decrease of S input from atmospheric deposition should be concerned .关键词
紫色土/长期施肥/硫/形态Key words
purple soil/long-term fertilization/sulphur/form分类
农业科技引用本文复制引用
钟海夫,张思兰,郭涛,石孝均..长期定位施肥紫色土无机硫形态变化[J].植物营养与肥料学报,2015,21(6):1652-1656,5.基金项目
国家科技支撑计划项目( 2012BAD05B03 ) （ 2012BAD05B03 ）
农业部公益性行业科研专项 ( 201203030 ) （ 201203030 ）
中央高校基本科研业务费专项(XDJK2010B012)资助. （XDJK2010B012）
