干旱区生态环境知识资源中心(Arid): 河套永济灌域土壤酸碱性与养分元素的关系

Arid

	河套永济灌域土壤酸碱性与养分元素的关系
其他题名	Correlation between Soil pH and Nutrients in Yongji Irrigation Subdistrict of Hetao Irrigation District,Inner Mongolia
	朱阳春 1; 张振华 1; 赵学勇2 ; 连杰 2; 陈敏 2; 刘良旭 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2017
卷号	37 期号:4 页码:742-748
中文摘要	为了探讨干旱区灌区不同土地利用方式下盐碱化土壤剖面pH值与土壤水分和养分之间的关系,测定河套永济灌域荒地、林地、农田3种土地利用方式下0~20、20~40、40~60、60~80、80~100cm剖面土壤pH值、含水率(SMC)、有机质(OM)、总氮(TN)、Zn、Cu的含量。结果表明:土壤pH值平均值为9.13;土壤含水率2.96%~ 31.35%;土壤OM、TN含量平均值分别为11.30、0.49g·kg~(-1);微量营养元素Zn、Cu平均值分别为107.20、32.78 mg·kg~(-1),是相应背景值的1.9、1.7倍;3种土地利用方式下,土壤pH值差异性极显著(P<0.001),高低顺序为荒地>农田>林地,在垂直剖面含量差异并不显著(P>0.05);3种土地利用方式下,土壤pH值主要受TN含量的影响,回归方程为Y_(pH)=9.336-0.409 X_(TN)(P=0.001);表层(0~40cm)土壤pH值在一定程度上受Cu含量的影响,回归方程为Y_(pH)=0.018 X_(Cu)+8.523(P=0.003)。在河套永济灌域,一方面土壤碱化会导致土壤养分含量的贫瘠,另一方面施肥等农业活动在一定程度上降低了土壤表层碱性,同时造成微量元素的累积,加重土壤碱性的作用也非常显著,因此在增加农业投入的同时应合理科学地施用农药化肥。
英文摘要	Yongji Irrigation District was selected to investigate the correlation between pH,water contents and nutrients of saline-alkali soils as the investigative area in arid irrigation districts.The concentrations of pH,soil moisture content(SMC),organic matter (OM),total nitrogen (TN),Zn and Cu in soil profiles under 3land-use patterns were measured to analyze the distribution of soil pH and the fitting equations.The results showed that the mean pH was 9.13;the soil moisture contents ranged from 2.96% to 31.35%;the average mean of OM and TN was 11.30 and 0.49 g·kg~(-1),respectively;the mean value of Zn and Cu was 107.20 and 32.78 mg·kg~(-1),1.9 and 1.7 times higher than the background value respectively.There were very significant differences in soil pH under 3 land-use patterns (P<0.001),decreasing in the order of wasteland>cropland>forestland,but there was similar among soil profiles(P>0.05).The variation in soil pH was primarily affected the variation in TN for 3l and-use patterns and the regression equation was Y_(pH)= 9.336-0.409 X_(TN)(P=0.001);for topsoil(0-40 cm),the content of Cu suggested influences of soil pH, and the regression equation was Y_(pH)=0.018 X_(Cu)+8.523(P=0.003).So in our study,on the one hand soil basification resulted in the short of soil nutrients.On the other hand,agricultural activity such as fertilization may lower the pH in topsoil,but the accumulation of microelement caused by the activity significantly increased soil pH.Therefore,increasing the agriculture inputs should pay more attention to apply the pesticides and fertilizers scientifically and reasonably,at the same time.
中文关键词	永济灌域 ; 土壤pH值 ; 土壤水分 ; 土壤养分 ; 土壤剖面 ; 不同土地利用方式 ; 相关关系
英文关键词	Yongji Irrigation District soil pH soil water soil nutrients soil profiles land-use patterns correlation
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:6013841
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237123
作者单位	1.江苏省农业科学院农业资源与环境研究所, 江苏省省部共建国家重点实验室培养基地-江苏省食品质量安全重点实验室, 南京, 江苏 210014, 中国; 2.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	朱阳春,张振华,赵学勇,等. 河套永济灌域土壤酸碱性与养分元素的关系[J]. 中国科学院西北生态环境资源研究院,2017,37(4):742-748.
APA	朱阳春,张振华,赵学勇,连杰,陈敏,&刘良旭.(2017).河套永济灌域土壤酸碱性与养分元素的关系.中国沙漠,37(4),742-748.
MLA	朱阳春,et al."河套永济灌域土壤酸碱性与养分元素的关系".中国沙漠 37.4(2017):742-748.