摘要
综合评价广西国有高峰林场林地土壤的肥力状况,为优化人工林区域精准施肥管理提供参考。于2024年在高峰林场采集了88个土壤样品,检测土壤pH值和有机质、氮、磷、钾及多种微量元素的含量。采用克里金插值法分析土壤肥力指标空间插值,利用综合指数法计算研究区土壤综合肥力指数,绘制土壤养分和肥力指数的空间分布图。结果显示:高峰林场林地普遍呈极强酸性,pH值为3.92~4.63。有机质、全氮、速效氮和速效钾含量为中等水平,而全磷、全钾和速效磷含量较低;铁含量过高,硼、铜和镁含量偏低,锌和钙含量适中。肥力指数低于0.60的区域占全场面积的98.22%,仅有1.78%的区域达到较高肥力水平。高峰林场林地整体呈现一定的酸化特征,土壤肥力总体处于较低水平,存在较大的改良潜力。
A comprehensive evaluation of soil fertility status in Guangxi State-owned Gaofeng Forest Farm was conducted to provide guidance for optimizing precise fertilization management of plantation area.In 2024,88 soil samples were collected from Gaofeng Forest Farm,and soil pH,contents of organic matter,nitrogen,phosphorus,potassium,and various trace elements were analyzed.Kriging interpolation was used to perform spatial interpolation of soil fertility indicators,and comprehensive fertility index of study area was calculated using comprehensive index method.Spatial distribution maps of soil nutrients and fertility indices were then created.The results indicated that the soils in Gaofeng Forest Farm were generally strongly acidic,with pH ranging from 3.92 to 4.63.Among the major elements,the contents of organic matter,total nitrogen,available nitrogen,and available potassium were at moderate levels,while total phosphorus,total potassium,and available phosphorus were relatively low.Among trace elements,iron content was excessively high,while boron,copper,and magnesium levels were low,and zinc and calcium levels were moderate.Areas with a fertility index below 0.60 accounted for 98.22%of the total area,with only 1.78%of the region achieving relatively high fertility levels.In conclusion,the soils of Gaofeng Forest Farm generally exhibit signs of acidification,with overall soil fertility being low,suggesting significant potential for soil improvement.
作者
陆珍先
曹宇轩
曾莉
赵运星
李刚
农建卫
韦永军
石媛媛
LU Zhenxian;CAO Yuxuan;ZENG Li;ZHAO Yunxing;LI Gang;NONG Jianwei;WEI Yongjun;SHI Yuanyuan(Guangxi Zhuang Autonomous Region Forestry Research Institute,Nanning 530002,Guangxi,China;Guangxi Zhuang Autonomous Region State-owned Gaofeng Forest Farm,Nanning 530001,Guangxi,China;Guilin University of Technology,Guilin 541006,Guangxi,China;State-owned Yongzhou Forest Farm of Mashan county,Nanning 530600,Guangxi,China)
出处
《桉树科技》
2025年第1期57-65,共9页
Eucalypt Science & Technology
基金
中央引导地方科技发展资金项目(桂科ZY22096012)
广西自筹经费林业科技项目(2024GXZCLK21、桂林科研[2022ZC]第43号)。
关键词
土壤养分
土壤肥力
人工林
soil nutrient
soil fertility
plantation
