福建富硒红壤区土壤硒含量特征及作物对硒的吸收
Characteristics of Soil Selenium Content and Crop Absorption of Selenium in Selenium Rich Red Soil Regions of Fujian Province
张青 1孔庆波 1栗方亮 1罗涛1
作者信息
- 1. 福建省农业科学院资源环境与土壤肥料研究所 福建福州 350013
- 折叠
摘要
在调查我国南方红壤区土壤及农产品中硒含量状况的基础上,分析了富硒红壤中硒的分布特征及其所产农产品中硒含量的变化规律.结果表明:我国南方富硒红壤面积较大,但在地理空间分布上具有一定破碎度;土壤中的硒虽伴生一定量的重金属和稀土等元素,但与重金属或稀土元素的相关性不大;在富硒土壤上生产的农作物总体表现为可食部位的硒含量低于非可食部位的,并且农作物中的硒含量与土壤有效态硒含量相关性显著.依据我国南方富硒红壤区土壤自身特性,可以通过调控富硒红壤区农田土壤的酸碱度、水分含量、施肥种类、施用调理剂等来提高土壤硒的有效性,达到农产品中硒含量增加的目的;同时,对外源补硒的技术和相应农产品硒的健康效应,需进一步研究与规范.
Abstract
Based on the investigation of the selenium content in soil and agricultural products in the red soil regions of southern China,the distribution characteristics of selenium in selenium rich red soil and the changes in selenium content in its agricultural products are analyzed.The results indicate that the selenium rich red soil area in southern China is relatively large,but with a certain degree of fragmentation in geographical spatial distribution.Although selenium in soil is associated with a certain number of heavy metals and rare earth elements,the correlation with heavy metals or rare earth elements is not significant.The overall performance of crops produced on selenium rich soil is that the selenium content in edible parts is lower than that in non-edible parts,and the selenium content in crops is significantly correlated with the available selenium content in the soil.Based on the soil characteristics of selenium rich red soil regions in southern China,the effectiveness of soil selenium can be improved by regulating the acidity,moisture content,fertilizer types,and application of conditioning agents of farmland soil in selenium rich red soil regions,in order to increase the selenium content in agricultural products.At the same time,further research and standardization are needed on the techniques of exogenous selenium supplementation and the corresponding health effects of selenium in agricultural products.
关键词
硒/红壤/富硒农产品/含量特征/食品安全/建议Key words
selenium/red soil/selenium rich agricultural products/content characteristics/food safety/proposal引用本文复制引用
基金项目
福建省自然科学基金项目(2021J014810)
福建省农科院对外合作项目(DWHZ-2022-07)
省属公益类科研院所项目(2024R11010022-5)
出版年
2024
NETL
NSTL
万方数据