摘要
安徽省淮北地区砂姜黑土和黄潮土的平均有效硫［ Ｃａ（ Ｈ２ Ｐ Ｏ４）２ 浸提性硫，简称 Ｍ Ｃ Ｐ－ Ｓ］分别为２１．７ 和１１．７ｍ ｇ／ｋｇ， Ｍ Ｃ Ｐ－ Ｓ低于缺硫临界值１６ｍ ｇ／ｋｇ 的土样分别占２７．３％ 和８２％ 。十个调查县市中有六个县市土壤平均 Ｍ Ｃ Ｐ－ Ｓ含量低于缺硫临界值。安徽省淮北地区两类土壤 Ｍ Ｃ Ｐ－ Ｓ缺乏主要可能与土壤质地、结构、ｐ Ｈ、微域地形及硫素的投入与输出等因素有关。
Contents of available S[Ca(H 2PO 4) 2 extracted S, i. e. MCP-S]in 40 Shajiang black meadow(SM) and 71 yellow meadow(YM) soil samples(representing 82% farmland soil in Huaibei area of Anhui Provinee) were investigated.The result showed that average MCP-S in both SM and YM was 21.7 and 11.7mg/kg soil, and 27.3% of MS and 82% of YM were below 16mg/kg soil,the dificient threshold value in MCP S content.The average MCP S content in 6 of 10 investigated counties was also below 16mg/kg soil. The low content of soil MCP S may be caused by the soil texture, structure,pH, micro topography,imput and output of sulphur etc. in the region.
出处
《安徽农学通报》
1999年第3期16-18,共3页
Anhui Agricultural Science Bulletin
关键词
有效硫
砂姜黑土
黄潮土
Available
Sulfur
Distribution
Affecting factor
