干旱区生态环境知识资源中心(Arid): 景电灌区盐碱耕地土壤剖面盐分时空演替特征研究

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	景电灌区盐碱耕地土壤剖面盐分时空演替特征研究
其他题名	Spatio-temporal succession characteristics of saline-alkali soil profile salt in Jingdian Irrigation District
	王荣荣 1; 徐存东 2; 刘辉 3; 张锐 1; 程慧 4; 王燕 1
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2019
卷号	37 期号:3 页码:244-249,266
中文摘要	为了研究西北干旱引黄灌区长期综合改良条件下盐碱耕地土壤化学性质的时空演替特征,以甘肃省景泰川电力提灌灌区(以下称景电灌区)为例,采集灌区不同耕种年限( 5、10、15 a)盐碱耕地0 ~ 80 cm土层土壤样品,同时选取试验地附近未耕作盐碱荒地作为对照。对土壤水溶性总盐( TS) 、pH值和各盐分离子指标进行测定与分析,研究了不同耕种年限盐碱耕地土壤剖面盐分的时空演替特征。结果表明,随着耕种年限的增加盐碱耕地土壤脱盐效果明显,土壤TS由未耕种时的4.081 g·kg~(-1)下降到耕种15 a后的0.411 g·kg~(-1);而土壤pH值则随着耕种年限的增加呈现出缓慢增加趋势,由未耕种时的8.30上升至耕种15 a后的9.05,说明土壤在脱盐过程中出现了碱化趋势;其余盐分指标除HCO_3~-随着耕种年限的增加呈现缓慢增加趋势,钠吸附比( SAR) 、Cl-/SO_2-4以及其余各盐分离子均随着耕种年限的增加而降低。可见随着耕种年限的增加,土壤条件得到了很大的改善,有利于作物的生长,但长期的土壤脱盐改造同时也诱发了土壤碱化倾向。
英文摘要	Over a long-term comprehensive improvement of the saline-alkali land in the arid Yellow River Irrigation Districts in northwest China,the soil chemical properties have been changing temporally and spatially. The Jingtaichuan Electric Irrigation District ( hereinafter referred to asJingdian Irrigation District) was taken as the typical study area. The soil samples were collected from 0~80 cm layers of the selected areas on different cultivation years ( 5,10,15 a),and an uncultivated saline-alkali wasteland near the test site was selected as a control. The total soluble salts ( TS),pH,and various salt ions were measured and analyzed to explore the spatio-temporal differentiation of salt in the saline-alkali soil profile. The results showed that with the extension of cultivation years, the salinity of soil profile was significantly decreasing that the TS of soil profile reduced from 4.081 g·kg~(-1) to 0.411 g·kg~(-1) with the 15a,while the pH was slowly increasing from 8.30 to 9.05 during the period. The concentration of HCO_3~- did not change much and the values of other salt ions and SAR,Cl-/SO_2-4 were decreasing. It indicated that with the extension of cultivation years,the soil conditions had been greatly improved,which is beneficial to the crops growth. However,the long-term comprehensive improvement of the saline-alkali land resulted in the alkalization tendency of cultivated land.
中文关键词	盐碱耕地 ; 耕种年限 ; 盐分特征 ; 景电灌区
英文关键词	saline-alkali land different planting years characteristics of salinity Jingdian Irrigation District
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6529659
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239101
作者单位	1.华北水利水电大学水利学院, 郑州, 河南 450046, 中国; 2.华北水利水电大学水利学院;;水资源高效利用与保障工程河南省协同创新中心, ;;水资源高效利用与保障工程河南省协同创新中心, 郑州;;郑州, 河南;;河南 450046;;450046, 中国; 3.中国水利水电科学研究院, 北京 100038, 中国; 4.河南天池抽水蓄能有限公司, 南阳, 河南 473000, 中国
推荐引用方式 GB/T 7714	王荣荣,徐存东,刘辉,等. 景电灌区盐碱耕地土壤剖面盐分时空演替特征研究[J],2019,37(3):244-249,266.
APA	王荣荣,徐存东,刘辉,张锐,程慧,&王燕.(2019).景电灌区盐碱耕地土壤剖面盐分时空演替特征研究.干旱地区农业研究,37(3),244-249,266.
MLA	王荣荣,et al."景电灌区盐碱耕地土壤剖面盐分时空演替特征研究".干旱地区农业研究 37.3(2019):244-249,266.