摘要
于2020年2月选取河津盐碱滩4个样地,设置20个采样点,对土壤有机质、全氮、有效磷、速效钾含量4项养分指标,以及土壤pH和全盐量进行检测,并采用模糊综合评价法和改进的内梅罗指数法对河津盐碱滩的土壤综合肥力进行评价,以期了解山西省河津黄河盐碱滩土壤肥力现状。结果表明:河津盐碱滩土壤的碱性较强但含盐量不高,土壤中有机质及氮磷钾含量偏低,且养分和全盐量在纵向分布上具有显著的表聚性。土壤全氮、有机质和速效钾的隶属度均值很小,是该区域土壤肥力的主要限制因子。应用2种评价方法得到的土壤肥力综合指数分别为0.240和0.262,说明该地区土壤肥力处于较低水平,需采取适当措施进行改良,以提高土壤肥力。
In February 2020,four sample plots in Hejin saline alkali flats were selected and 20 sampling points were set up for soil sample collection.The four nutrient indicators of soil organic matter,total nitrogen,available phosphorus,and available potassium,as well as soil pH and total salt content were tested.In addition,the fuzzy comprehensive evaluation method and the improved Nemerow index method were used to evaluate the comprehensive soil fertility of Hejin saline alkali flat.In order to investigate the soil fertility of Yellow River saline alkali flat in Hejin region,Shanxi Province.The results showed that the soil of Hejin saline alkali flats was relatively alkaline but not high in salt content.The contents of organic matter,nitrogen,phosphorus,and potassium in the soil were low.The content of nutrient and total salt had significant surface aggregation in the vertical distribution.The values of membership functions of the indexes were small,revealed that total nitrogen,organic matter,and available potassium were the major limited soil fertility factors in this region.The integrated fertility index(IFI)of soil calculated by using the two evaluation methods was 0.240 and 0.262,respectively,which illustrated that the soil fertility in this region was at a low level.Therefore,it needs to take appropriate measures to improve the soil fertility in Hejin saline alkali flat.
作者
乔俊
任惠雯
费鹏
霍金仙
赵建国
赵泽敏
QIAO Jun;REN Huiwen;FEI Peng;HUO Jinxian;ZHAO Jianguo;ZHAO Zemin(College of Chemistry and Chemical Engineering,Shanxi Datong University,Datong,Shanxi 037009;Key Laboratory of National Forest and Grass Administration for the Application of Graphene in Forestry,Datong,Shanxi 037009;Institute of Carbon Materials Science,Shanxi Datong University,Datong,Shanxi 037009)
出处
《北方园艺》
CAS
北大核心
2021年第16期102-107,共6页
Northern Horticulture
基金
国家自然科学基金资助项目(52071192)
山西省科技成果转化引导专项资助项目(201804D131041)
大同市科技攻关资助项目(2020040)。
关键词
土壤肥力
盐碱地
调查
模糊综合评价
内梅罗指数法
soil fertility
saline alkali land
investigation
fuzzy comprehensive evaluation
Nemerow index method
