湖南省稻田土壤硫素状况研究  

Study on the Sulphur Status in Some Paddy Soils of Hunan Province

作　　者：黄运湘[1] 郭春秋[2] 张杨珠[1] 周清[1] 郭朝晖[1] 

机构地区：[1]湖南农业大学资源与环境学院,湖南长沙410128 [2]常德师范学院生物系,湖南常德415000

出　　处：《土壤与环境》2000年第3期235-238,共4页Soil and Environmental Sciences

基　　金：国家"九五"重点科技攻关项目!(95-01-001-03);湖南农业大学青年基金!(基34)

摘　　要：采集湖南省主要母质类型的稻田土壤，进行土壤全硫、有效硫及其相关性质的分析研究。结果表明，（1）供试耕层土壤全硫含量在0.266～0.885 g/kg 之间，平均0.539 g/kg。土壤有效硫变动范围为17.7～135.1 mg/kg，平均56.7 mg/kg。土壤全硫和有效硫之间有极显著的相关性，相关系数为0.423**(n =40）。（2）随着土壤剖面层次的加深，土壤有效硫和全硫含量逐渐减少。（3）耕层土壤C∶N，C∶S，N∶S比率分别为9.3～14.5，34.5～62.8和3.1～6.3；土壤C∶N∶P∶S比率平均为48.7∶4.67∶1.4∶1。（4）相关分析表明，土壤全硫与土壤全N、 全P、有机C之间均呈极显著正相关，且以N、S之间的相关性最为密切。A study on the total and available sulphur and some correlated characters in some paddy soils of Hunan province were conducted. The results showed that: (1) The total S content of plough horizons ranges from 0.266～0.885 g/kg and is 0.539 g/kg on average, while the available S content ranges from 17.7～135.1 mg/kg and is 56.7 mg/kg on average. The correlation between available and total S is significant at the P0.01. (2) The total and available S generally decreased with increasing the depth in soil profile. (3) The C∶N, C∶S and N∶S ratios of Aa horizon soils is 9.3～14.5,34.5～62.8 and 3.1～6.3, respectively. The mean of C∶N∶P∶S ratios was 48.7∶4.67∶1.4∶1. (4) The analysis of correlation between total S and total N and P, and organic C, respectively.

关 键 词：水稻土 土壤硫素 湖南 硫肥 土壤剖面 

分 类 号：S153.61[农业科学—土壤学] S155.42[农业科学—农业基础科学]