摘要
土壤微量元素有效态含量不仅影响作物产量,还能够影响作物品质。选取昌平、平谷、房山和通州4处种植区,采集作物根系土样品80份,探讨土壤中有效铜、有效锌、有效铁、有效硫、有效锰、有效钼和有效硼等7种有效态的含量特征和丰缺状况,并对其影响因素进行了分析。结果表明:土壤中有效铜、有效锌含量丰富,有效铁、有效硫含量较丰富,有效锰含量中等,有效钼、有效硼含量较缺乏。土壤微量元素有效态含量的高低受元素全量、pH值、有机质含量等多种因素的共同影响,铜、锌、硫、钼元素的全量与有效态之间呈正相关性;pH值与有效硼之间呈正相关性,与其他元素有效态之间呈负相关性;有机质与有效锌、有效硫、有效锰以及有效硼之间存在较为显著的正相关性。
The available content of soil trace elements can not only affect crop yield, but also crop quality. Four planting areas,Changping, Pinggu, Fangshan and Tongzhou, are selected to collect 80 samples of crop root soil. The content characteristics is discussed including abundance and deficiency of seven available forms in soil, such as available Cu, available Zn, available Fe, available S, available Mn, available Mo and available B, and their influencing factors are analyzed.The results show: the soil in the study area is rich in available Cu and available Zn, fairly rich in available Fe and available S, medium in available Mn, and lacking in available Mo and available B. The available content of soil trace elements is affected by many factors, such as total element content, pH value, organic matter content and so on. There is a positive correlation between the contents of Cu, Zn, S and Mo and the available state.There is a positive correlation between pH and available B, and a negative correlation with the effective state of other elements. There is a significant positive correlation between organic matters and available Zn, available S, available Mn and available B.
作者
李欢
黄勇
闫广新
郑祺恺
黄丹
李迪
王宇辰
LI Huan;HUANG Yong;YAN Guangxin;ZHENG Qikai;HUANG Dan;LI Di;WANG Yuchen(Bejing Istitute of Ecological Geolagy,Bejing 100120,China)
出处
《城市地质》
2022年第2期142-148,共7页
Urban Geology
基金
北京市土地质量生态地球化学监测网运行(11000022T000000439575)
京西“一线四矿”及周边区域生态地质专项调查与评价示范(11000022T000000491145)资助。
关键词
微量元素有效态
农用地
分级评价
影响因素
effective state of trace elements
agricultural land
graded evaluation
influencing factor
