干旱区生态环境知识资源中心(Arid): 添加外源硫对农田土壤挥发性含硫气体释放的影响

Arid

	添加外源硫对农田土壤挥发性含硫气体释放的影响
其他题名	Effects of exogenous sulfur on volatile sulfur gases emitting from the farmland
	高珍珍; 汪丽玲; 景伟文
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2017
卷号	35 期号:3 页码:253-259,284
中文摘要	选择新疆地区代表性农田土壤为样品,采用气相色谱法进行测定,通过室内培养的方式考察了各种添加外源硫和环境条件对土壤挥发性含硫气体释放的影响。结果表明:不同添加源对挥发性含硫气体种类及数量的影响各不相同。添加胱氨酸、半胱氨酸、甲硫氨酸、硫酸钠和硫代硫酸钠后,释出的挥发性含硫气体在总硫中所占的比例依次为1.71%、0.52%、11.5%、0.0016%和0.0014%,表明转化率均较低,其中无机硫的转化率最低,甲硫氨酸的转化率最高,有机硫是主要来源。在土壤微生物分解作用下,胱氨酸、半胱氨酸的主要分解产物是H_2S,分别占总释放量的97.9%、90.8%;甲硫氨酸能够释放较多的CH_3SH气体,占总释放量的88.3%。在一定范围内(1~10 mg·g~(-1)),含硫气体的释放量随半胱氨酸添加量的增加而增加。碳、氮源加入的影响与挥发性含硫气体的种类有关。环境条件对挥发性含硫气体的释放也有影响,培养用水的影响远高于土壤类型,是相对重要的因素。
英文摘要	In this paper, the influences of different exogenous sulfur and environmental conditions on the emissions of volatile sulfur gases from soil were investigated by gas chromatography for the representative farmland soil samples in arid area of Xinjiang. The results showed that sources of exogenous sulfur had different influences on the kind and the amount of volatile sulfur gases emitting from incubation soils. Volatile sulfur gases released from the soil with cystine, cysteine, methionine, sodium sulfate and sodium thiosulfate addition contributed fewer to total sulfur emission, being 1.71%, 0.52%, 11.5%, 0.0016% and 0.0014%, respectively. The conversion rate was the highest for methionine but lowest for inorganic sulfate. Organic sulfur acted as a major contributor to volatile sulfur gases emission from soil. As the main product, H_2S accounted for 97.9% and 90.8% of the total emissions from cystine and cysteine by microbial decomposition. CH_3SH was the main product detected from methionine decomposition and accounted for 88.3% of the total emissions. The amounts of volatile sulfur gases were positively proportional to the amounts of added cysteine (1~10 mg·g~(-1)). The influence of added carbon and nitrogen fertilization was related to the kind of evolved volatile sulfur gases. Incubation conditions such as the soil types and irrigation water had substantial effect on sulfur gases emissions, with the moisture in incubation soil having the larger influence.
中文关键词	添加剂 ; 外源硫 ; 农田土壤 ; 挥发性含硫气体 ; 释放
英文关键词	additives exogenous sulfur farmland soil volatile sulfur gases emission
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY ; ENVIRONMENTAL SCIENCES
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
CSCD记录号	CSCD:6026786
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235893
作者单位	新疆农业大学化学工程学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	高珍珍,汪丽玲,景伟文. 添加外源硫对农田土壤挥发性含硫气体释放的影响[J]. 新疆农业大学,2017,35(3):253-259,284.
APA	高珍珍,汪丽玲,&景伟文.(2017).添加外源硫对农田土壤挥发性含硫气体释放的影响.干旱地区农业研究,35(3),253-259,284.
MLA	高珍珍,et al."添加外源硫对农田土壤挥发性含硫气体释放的影响".干旱地区农业研究 35.3(2017):253-259,284.