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作 者:吴正[1] 梁红霞[1] 陈富荣[1] 李明辉[1] 李杨[1] 刘超[1] WU Zheng;LIANG Hong-xia;CHEN Fu-rong(Geological Survey of Anhui Province(Anhui Institute of Geological Sciences),Hefei,Anhui 230001)
机构地区:[1]安徽省地质调查院(安徽省地质科学研究所),安徽合肥230001
出 处:《安徽农业科学》2021年第22期92-96,共5页Journal of Anhui Agricultural Sciences
基 金:中国地质调查局地质调查专项(12120115049601)。
摘 要:以安徽南陵地区土壤大量养分元素为主要研究对象,通过对区内土壤样品的采集与测试,统计分析土壤氮、碱解氮、磷、有效磷、氧化钾、速效钾等的含量特征,并对其分布特征加以研究,最终开展研究区土壤养分地球化学综合等级评价。结果表明,土壤氮和碱解氮在研究区内以丰富为主,且两者相关性较好,相关系数高达0.85,可能与土地利用类型有关;磷及有效磷在区内主要表现为较缺乏-缺乏,两者相关性较差,可能与磷在土壤中的存在形式及人为活动有关;氧化钾在区内分布主要表现为较丰富-中等-较缺乏3种,呈正态分布,孤峰河两侧分布差异明显,速效钾在区内零星分布,特征不明显;区内土壤养分地球化学综合评价结果以三级(中等)土壤为主,占研究区总面积的58.45%。Taking a large number of soil nutrient elements in Nanling area of Anhui Province as the main research object,through the collection and testing of soil samples in the area,the content characteristics of soil nitrogen,alkali-hydrolyzable nitrogen,phosphorus,available phosphorus,potassium oxide and available potassium were statistically analyzed,and the distribution characteristics were studied,and the comprehensive grade evaluation of soil nutrients and geochemistry in the study area was finally carried out.The results showed that soil nitrogen and alkali-hydrolyzable nitrogen were mainly abundant in the study area,and the correlation between the two was good,the correlation coefficient was as high as 0.85,which might be related to the type of land use.Phosphorus and available phosphorus in the region were mainly relatively deficient-deficient,and the correlation between the two was poor,which might be related to the form of phosphorus in the soil and human activities.The distribution of potassium oxide in the area was mainly characterized by richer-medium-less three species,showing a normal distribution.The distribution of the two sides of the Gufeng River was obviously different,and the available potassium was scattered in the area,and the characteristics were not obvious.The comprehensive evaluation results of soil nutrients and geochemistry in the area were dominated by tertiary(medium)soils,accounting for 58.45%of the total area of the study area.
关 键 词:土壤大量养分元素 含量特征 分布特征 地球化学 安徽南陵地区
分 类 号:S158[农业科学—土壤学] X825[农业科学—农业基础科学]
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