景谷县思茅松人工林土壤养分特征与肥力评价  

Soil Nutrient Characteristics and Fertility Evaluation of Pinus kesiya var.langbianensis Plantations in Jinggu County

作　　者：杨斌 王家学 郭小玮 景跃波 姜远标 YANG Bin;WANG Jiaxue;GUO Xiaowei;JING Yuebo;JIANG Yuanbiao(Yunnan Academy of Forestry and Grassland,Kunming Yunnan 650201,P.R.China;National Forestry and Grassland Engineering Research Center for Simao Pine,Kunming Yunnan 650201,P.R.China;Yunnan Yunjing Forestry Development Co.Ltd.,Pu’er Yunnan 666499,P.R.China;Forestry and Grassland Research Institute of Pu'er Municipality,Pu’er Yunnan 665000,P.R.China)

机构地区：[1]云南省林业和草原科学院,云南昆明650201 [2]国家林业草原思茅松工程技术研究中心,云南昆明650201 [3]云南云景林业开发有限公司,云南普洱665499 [4]普洱市林业和草原科学研究所,云南普洱665000

出　　处：《西部林业科学》2023年第4期7-12,共6页Journal of West China Forestry Science

基　　金：云南省创新团队项目(202105AE160008)。

摘　　要：思茅松是云南重要的乡土材、脂两用树种,为了解人工林的土壤养分状况,为思茅松栽培的立地选择、土壤管理及经营措施的制定提供参考依据。以景谷县永平、凤山、民乐和小景谷等乡镇的8个有代表性的思茅松人工林林分为研究对象,采集土壤样品,测定pH值、有机质、碱解氮、有效磷、速效钾、全氮、全磷、全钾8个指标,采用模糊综合评价法计算土壤肥力综合指数。结果显示:思茅松人工林林地土壤养分指标的变异系数为36.4%~82.4%,其中有效磷的变异系数最大,有机质、碱解氮、速效钾、全氮、全磷、全钾为中等变异的养分因子;有机质、速效钾含量处于中等水平,碱解氮、全氮、全磷、全钾含量处于缺乏水平,有效磷处于极缺乏水平;8个思茅松人工林林分的土壤肥力综合指数0.1~0.7,平均值为0.337,土壤肥力处于缺乏水平,土壤肥力综合指数排序依次为独水井>文朗>茂密>黄果营>老鹰窝>小景谷>马打滚>大团山。研究结果表明:景谷县思茅松种植基地人工林土壤总体处于低肥力水平,氮和磷是影响土壤肥力水平的主要限制因子。Pinus kesiya var.langbianensis is an important tree species with dual function of timber and resin indigenous to Yunnan province of China.This study was conducted to learn the soil fertile status of Pinus kesiya var.langbianensis plantations,and to provide references for planting site selection,soil and stand management of this species.Soil samples were collected from 8 Pinus kesiya var.langbianensis plantations in Yongping,Fengshan,Minle and Xiaojinggu of Jinggu county,eight soil indexes were examined including pH value,organic matter(OM),available nitrogen(AN),available potassium(AK),total nitrogen(TN),total phosphorus(TP)and total potassium(TK),and the soil integrated fertility index was calculated.The results showed that the variable coefficient of 8 nutrient contents was 36.4%-82.4%in the region,the variation of AP was the biggest,while the variation of OM,AN,AK,TN,TP and TK were moderate.The contents of OM and AK were at the medium level,the contents of AN,TN,TP and TK were at the poor level,the content of AP was at very poor level.The soil integrated fertility index(IFI)in the study area was 0.1-0.7 with an average value of 0.337,the soil fertility was at poor level.The IFI of the sampling plantation decreased in the order of Dashuijing>Wenlang>Maomi>Huangguoying>Laoyingwo>Xiaojinggu>Madagun>Datuanshan.The results showed that the Pinus kesiya var.langbianensis plantations in Jinggu county of Pu’er city were at a low fertility level,nitrogen and phosphorus were the main limiting factor influence the soil fertility level.

关 键 词：思茅松 土壤肥力 养分评价 模糊数学 

分 类 号：S791.259[农业科学—林木遗传育种] S714[农业科学—林学]