黑龙江松嫩平原南部土壤硒元素含量及其分布特征的影响因素

Influence Factors of Soil Selenium Content and Its Distribution Characteristics in South of the Songnen Plain in Heilongjiang Province

为研究黑龙江省松嫩平原南部地区硒元素含量高的背景资源开发利用,以采集的土壤、农作物等样品分析测试获得大量的高质量、高精度的硒数据为主,对其在各类型土壤的含量特征进行了分析阐述,对影响土壤Se分布的主要因素及其赋存形式和影响因素进行系统分析,并研究其在土壤—农作物的迁移转化特征,评价土壤的硒元素丰缺及研究区产出农产品质量。结果表明:松嫩平原南部土壤硒含量为0.504mg·kg-1,表层土壤硒含量高于深层土壤,且不同相态硒含量与总量均为显著的正相关关系。

For the in-depth study of development and utilization of selenium resources in south of the Songnen Plain in Heilongjiang Province,taking a large number of the high quality and high accuracy data of selenium in soil,crops and other samples as materials,the content of each type of soil in the characteristics were analyzed, the main factors affecting the distribution of soil Se and its occurrence forms and its influencing factors in sys- tem were analyzed and studied, as well as the migration in soil- crop characteristics, the soil selenium element a- bundance and quality of agricultural products produced in the study area were evaluated. The results showed that soil selenium content of South of the Sorgnen Plain was 0. 204 mg· kg-1 , the content in surface soil was higher than deep soil. The relationship of different phase Se and total Se was significant positive correlation.