豫中植烟土壤有效态微量元素与pH和有机质的关系  

Relationship Between Available Trace Elements and pH and Organic Matter in Tobacco-planting Soil in Central Henan Province

作　　者：丁燕芳[1] 赵凤霞[1] 米琳 王海涛[1] 宋学立[1] 朱景伟[1] 张敏[1] 何嘉[1] DING Yanfang;ZHAO Fengxia;MI Lin;WANG Haitao;SONG Xueli;ZHU Jingwei;ZHANG Min;HE Jia(Tobacco Research Institute of Henan Academy of Agricultural Sciences,Xuchang,Henan 461000,China)

机构地区：[1]河南省农业科学院烟草研究所,河南许昌461000

出　　处：《土壤》2022年第1期88-94,共7页Soils

基　　金：河南省农业科学院项目(2020ZC20)资助。

摘　　要：为探明豫中植烟土壤pH和有机质对微量元素有效态含量的影响,在豫中许昌市的建安、禹州、襄城和漯河市的城区、临颍和舞阳6个植烟县(区)采集了191个典型烟田耕层(0~20 cm)土样,测定了微量元素(有效铜、铁、锰、锌、钼)含量、pH和有机质含量,采用Pearson相关分析法与曲线回归方法分析了有效态微量元素含量与pH、有机质之间的关系。结果表明,有效铜、铁、锰、锌和钼的平均含量分别为1.20、49.24、84.80、1.71和0.02 mg/kg,有效锰总体上充足,有效钼整体极为缺乏,个别样点有效铜、铁和锌缺乏;pH平均为7.90,总体上偏高;有机质平均为17.78 g/kg,总体上适宜;微量元素有效态与pH、有机质之间均存在二次函数关系,随pH升高,有效铜呈增加趋势,有效铁和锌呈先升后降趋势,有效锰和钼呈先降后升趋势;随有机质升高,有效铜、锰、锌和钼呈增加趋势,有效铁呈先升后降的趋势。In order to find out the influences of pH and soil organic matter(SOM)on the available contents of trace elements in tobacco-planting soil in central Henan Province,191 typical topsoil samples(0-20 cm)were collected from six major tobacco-producing areas Jian'an,Yuzhou and Xiangcheng of Xuchang City as well as Chengqu,Linying and Wuyang of Luohe City,the contents of available trace elements(Cu,Fe,Mn,Zn and Mo)and SOM as well as pH values were determined,and the relationship between available trace elements with pH and SOM were analyzed by Pearson correlation and curve regression method.The results showed that the average contents of available Cu,Fe,Mn,Zn and Mo were 1.20,49.24,84.80,1.71 and 0.02 mg/kg,respectively,Mn was generally sufficient,Mo extremely insufficient,and Cu and Zn insufficient in some soil samples.The average value of pH and SOM were 7.90 and 17.78 g/kg,respectively,which indicated pH was a bit higher while SOM was appropriate for tobacco-planting.Pearson analysis showed that there were quadratic function correlations between pH and SOM with trace elements,with the increase of pH,available Cu increased,Fe and Zn increased first and then decreased,and Mn and Mo decreased first and then increased;with the increase of organic matter,available Cu,Mn,Zn and Mo showed an increasing trend,while available Fe showed a trend of increasing first and then decreasing.

关 键 词：植烟土壤 PH 有机质 微量元素 相关性 

分 类 号：S158[农业科学—土壤学]