东北3个典型黑土区土壤无机硫的形态分布.PDF

2011 5 19 3 Chinese Journal of Eco-Agriculture, May 2011, 19(3): 511−515 DOI: 10.3724/SP.J.1011.2011.00511 3 * 1 2 2 1 1 1 迟凤琴 汪景宽 张玉龙 魏 丹 周宝库 匡恩俊 (1. 150086; 2. 110161) 采用田间取样、室内分步浸提的方法, 系统研究了我国东北 3 个典型黑土地区土壤无机硫的含量分 布和形态特征。结果表明: 耕层(0~20 cm)黑土中无机硫含量占全硫的百分比为22%, 其中水溶性硫占6%, 吸 附性硫占3%, 盐酸可溶性硫占 13%。水溶性硫和吸附性硫含量表现为海伦北安公主岭, 盐酸可溶性硫含量 为公主岭海伦北安。水溶性硫、吸附性硫含量随剖面的加深变化不大, 盐酸可溶性硫在 115 cm 深度以下有 一个积累的过程。土壤水溶性硫、吸附性硫与土壤有机质含量、阳离子交换量和0.002 mm 黏粒含量呈显著 或极显著正相关, 与pH 呈显著和极显著负相关; 盐酸可溶性硫含量和土壤电导率之间呈显著正相关。海伦地 区黑土无机硫总量和盐酸可溶性硫含量随开垦年限增加明显下降, 呈显著负相关。 黑土 无机硫 水溶性硫 吸附性硫 盐酸可溶性硫 土壤性质 开垦年限 : S158.3 : A : 1671-3990(2011)03-0511-05 Speciation distribution of soil inorganic sulfur in three black soil areas of Northeast China 1 2 2 1 1 1 CHI Feng-Qin , WANG Jing-Kuan , ZHANG Yu-Long , WEI Dan , ZHOU Bao-Ku , KUANG En-Jun (1. Institute of Soil Fertilizer and Environment Resource, Heilongjiang Academy of Agricultural Sciences; Key Laboratory of Soil Environment and Plant Nutrition of Heilongjiang Province, Harbin 150086, China; 2. Shenyang Agricultural University, Shenyang 110161, China) Abstract Using field sampling and step-extraction method, this paper analyzed the distribution and fraction characteristics of soil inorganic sulfur in three black soil zones in Northeast China. The results showed that inorganic sulfur in the top 0~20 cm black soil accounted for 22% of total sulfur. Then of th