摘要
研究耕地土壤养分(有机质(OM)、碱解氮(AN)、有效磷(AP)和速效钾(AK))时空分布特征对改善土壤理化性状、保护环境和促进农业发展具有重要意义。通过运用经典统计学方法对2014年澄城县农业土壤有机质、碱解氮、有效磷、速效钾时空变异进行分析,并与1982年土壤普查数据进行对比,结果表明:土壤有机质、碱解氮处于缺乏水平;有效磷处于适量水平;速效钾处于丰富水平;p H为弱碱性土。与土壤普查数据相比,澄城县土壤养分除速效钾略有下降外,其他养分都有了较大幅度的提高。建议该地区增加有机肥的投入,以保证作物稳产、高产。
The research of soil nutrients （organic matter [OM] ; available nitrogen [AN] ; available phosphorus [ AP] ; availa-ble potassium [ AK] ） is essential for improving the physical and chemical properties of soil,for protecting the environment and for sustaining agricultural development.This study used traditional statistics to evaluate the spatial and temporal variability of 0M,AN, AP,AK content of Chengcheng county in 2014,and compared with the second national soil survey and the cultivated land productivi-ty investigation and quality evaluation project in 1982.The results showed that OM and AN are on the lack level,AP at the appropri-ate level; and AK abundant level; Soil PH is weakly alkaline.Compared with the second national soil survey and the cultivated land productivity investigation and quality evaluation project in 1982,all the indexes increased significantly except for the slightly decrease of AK.The advice is that OM should be increased to maintain high and stable cereal crop yields.
出处
《渭南师范学院学报》
2017年第8期68-72,共5页
Journal of Weinan Normal University
基金
陕西省河流湿地生态与环境重点实验室开放基金项目:黄河湿地农业面源污染现状研究(SXSD1402)
渭南师范学院特色学科建设项目:秦东化工
材料技术调查(2014TSXK004)
渭南师范学院科研计划项目:秦东渭河湿地水质调查与评价(15YKF003)
关键词
澄城县
农业土壤
养分
Chengcheng county
agricultural soil
nutrients
作者简介
胡明（1978-）,男,河北沧州人,渭南师范学院农商学院副教授,农学硕士,主要从事地理科学研究.
