摘要
为了解湖南省农业环境有效硫状况，１９９７～１９９８年对全省各地、州、市耕地土壤有效硫及主要河流水中硫含量进行取样测定，并对有关大气及降水中硫的资料进行收集整理．结果表明，耕地土壤有效硫含量在６．６～２６５．１ｍｇ／ｋｇ之间，平均为（３６．８±３．１）ｍｇ／ｋｇ，其中低于１６ｍｇ／ｋｇ的土样占２０．９％．土壤有效硫含量以湘西和湘北较高，湘东和湘南较低．８种成土母质发育的土壤有效硫含量从高到低依次为石灰岩、第四纪红土、砂岩、花岗岩、河流冲积物、湖积物、板页岩、紫色砂页岩．大气中ＳＯ２的含量以吉首最高，株州及郴州最低，平均含量为０．０９３ｍｇ／ｍ３．降水中硫的含量，城市平均为３．７４ｍｇ／Ｌ，郊区为２．７０ｍｇ／Ｌ，农村为１．７８ｍｇ／Ｌ．湖南省四大河流水中硫的含量（除湘江的长沙段外）为０．６７～４．４５ｍｇ／Ｌ，平均为２．４８ｍｇ／Ｌ．
This survey was conducted in 1997 and 1998. The result obtained showed that available S content of soils in Hunan ranged from 6.6 mg/kg to 265.1 mg/kg, averaging (36.8±3.1) mg/kg, the samples of available sulphur <16 mg/kg,were 20.9% of total samples. In West or North Hunan, available S of soils was higher than that in East or South Hunan.Moreover, available S content was related with soil parent materials, the order was:limestone>quaternary period red soil>sandstone>granite>alluvial deposit of river>alluvial deposit of Dongting lake>slate>purple shale.Average content of SO 2 in atmosphere was 0.093 mg/m 3,but it was comparatively high in Jishou city and comparatively low in Zhuzhou or Chenzhou. Sulphur content of rainfall water was 3 74 mg/L in the urban, 2 70 mg/L in the suburban and 1 78 mg/L in the countryside. Sulphur precipitation of soil in the countryside reached 22 6 kg/hm 2.Sulphur content of water in four main rivers was from 0.67 mg/L to 4.45 mg/L,averaging 2.48 mg/L.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
1999年第2期147-150,共4页
Journal of Hunan Agricultural University(Natural Sciences)
基金
美国硫研究所(TSI)及中国科学院南京土壤研究所合作课题
关键词
农业环境
有效硫
二氧化硫
沉降
湖南
土壤
agricultural environment available sulphur SO 2 precipitation Hunan
