摘要
对污染区和对照区分别进行土壤和农作物取样,研究长期受电厂烟气影响的土壤环境和农作物相关元素含量的变化及其对农作物品质的影响,发现土壤总S、总F、可溶性硫、可溶性氟含量及pH变化与电厂烟气引起大气SO2污染密切相关,土壤中已出现S和F的积累。对研究区主要农作物小麦的叶S和籽粒S含量及籽粒品质(千粒重、蛋白质含量和淀粉含量)的监测表明,小麦叶、籽粒S含量与大气污染正相关,叶片中已发生S累积,籽粒中尚未形成S累积;籽粒S含量与籽粒蛋白质含量极显著正相关,说明大气中SO2浓度适当升高可提高小麦品质。
The relative element contents of soil and crops affected by power plant smoke over long time and its influence on crop quality were studied through sampling of soil and corps in both polluted and non-polluted areas. Results show significant relationship between soil pH, total S and F contents and available S and F contents with SO2 pollution from power plant smoke. S and F accumulation is observed in polluted soils. S content in wheat leaves and grains and the thousandgrain weight, protein content and wheat starch content were also monitored. S content in wheat leaves and grains are positively related to SO2 pollution in the air. S accumulation is not observed in grains, but does exist in leaves. S content has a positive correlation with protein content, meaning that a slight SO2 increase in the air improves wheat quality.
出处
《中国生态农业学报》
CAS
CSCD
2007年第5期151-155,共5页
Chinese Journal of Eco-Agriculture
基金
陕西省环境保护局研究项目资助
关键词
电厂烟气
SO2污染
土壤环境
农作物
硫
氟
Power plant smoke, SO2 pollutions, Soil environment, Crop, Sulfur, Fluorine
