摘要
为研究吉林中部黑土区营养元素地球化学特征,在研究区进行了系统的野外调查和土壤-玉米籽粒样品的采集。在对数据进行统计对比的基础上,对研究区九种营养元素全量、有效态含量及玉米籽粒中营养元素含量的空间分布特征进行了分析,并对研究区土壤营养状况进行了评价。结果表明:K、Ca、Mg、Fe、Mn、Cu、Zn、B元素有效态含量充足,Mo元素有效态含量缺乏,不同区域营养元素空间分布存在差异;Ca、Mg、Mn、Mo元素全量与有效态呈显著正相关,K、Ca、B元素有效态含量随pH值的升高而升高,Fe、Mn、Mo元素有效态含量随pH值的升高而降低。针对研究区有效Mo缺乏的现象,可以通过施用钼肥、降低土壤pH值等的方法,增加有效态钼的含量。
In order to study the geochemical characteristics of nutrient elements in black soil region of central Jilin,the systematic field investigation was conducted,and the soil and corn seeds samples were col-lected.On the basis of statistical comparison of data,the spatial distribution characteristics of total contents and available contents of nine kinds of nutrient elements in soil in research areas and their contents in corn seeds were analyzed.The nutrient status in research areas was also evaluated.The results showed that the a-vailable contents of K,Ca,Mg,Fe,Mn,Cu,Zn and B were sufficient;the available content of Mo was ab-sent;the spatial distribution characteristics of nutrient elements in different research areas were different.The total contents of Ca,Mg,Mn and Mo were positively significantly correlated with their available contents;the available contents of K,Ca and B increased,while those of Fe,Mn and Mo decreased with the increase of pH.To solve the problem of lack of available Mo in research areas,using Mo fertilizer and bringing down the soil pH were the effective methods to increase the available Mo content.
出处
《山东农业科学》
2014年第5期72-76,共5页
Shandong Agricultural Sciences
基金
吉林省自然科学基金项目(201115042)
中国地质调查局项目(1022310200049)
关键词
吉林中部
黑土区
土壤-作物系统
营养元素
地球化学特征
Central Jilin
Black soil region
Soil-crop system
Nutrient element
Geochemical charac-teristics
