摘要
锌、铜元素是植物必需的营养元素之一,土壤中缺乏锌、铜元素将影响作物品质和产量;如超过一定范围又会引起植物和土壤生物的中毒;土壤一旦被这些重金属污染又很难消除其危害。搞清土壤微量元素的背景值水平,对开展区域环境质量评价,研究污染物的分布及自然环境疾病,指导农业合理施肥等都具有重要意义。本文以土壤地球化学观点,研究辽河流域锌、铜元素土壤背景值水平,分布规律及相关性。
The investigation based on the soil background level of Liaohe River Valley indicated that the contents of the elements Zn and Cu are in the lower limits in soil over the world.The distributive regularity is that the contents of the two elements are in the eastern rigion>the western riglon>the northern riglon.The Variation of contents between Zn and Cu has a significantly positive correlation.
出处
《辽宁农业科学》
北大核心
1989年第1期21-25,共5页
Liaoning Agricultural Sciences
