长期地膜覆盖及不同施肥处理对棕壤中全硫和有效硫的影响  

Effects of Long-term Mulching and Fertilization on Total Sulphur and Available Sulphur in Brown Earth

作　　者：汪景宽[1] 田晓婷[1] 李双异[1] 石岩[1] 安婷婷[1] 

机构地区：[1]沈阳农业大学,辽宁沈阳110161

出　　处：《土壤通报》2008年第4期804-807,共4页Chinese Journal of Soil Science

基　　金：国家重点基础研究发展计划(973项目,2005CB121108)

摘　　要：对长期连续覆膜(1987年～2005年)及不同施肥处理的棕壤中土壤全硫及有效硫进行动态变化研究。结果表明:表层土壤全硫及有效硫含量差异显著,土壤全硫含量的垂直分布随土层加深而逐渐降低。四种施肥处理对全硫和有效硫含量有一定影响,全硫含量高低顺序为M2N2>M2>N2>CK;有效硫的顺序为N2>M2N2>M2>CK。裸地土壤全硫和有效硫含量随时间变化总体呈下降趋势,而覆膜土壤总体上升。Total S and available S were determined in the treatments with different application of fertilizers and manure under long-term cultivation. The results showed that the contents of total S and available S in 0-20cm of soil were more than that in 20-40cm. The total sulfur decreased with the depth of soil. The total S and available S were affected by fertilizations. The order for total S was M2N2〉M2〉N2〉CK, and for available S was M2〉M2N2〉N2〉CK. The total S and available S in uncovered treatments decreased with the years, and increased in covered treatments.

关 键 词：地膜覆盖 土壤硫素 施肥 

分 类 号：S158[农业科学—土壤学]