基于Nemerow法的大理海东新区木莲引种栽培示范园绿地土壤肥力分析与评价  

Soil Fertility Analysis and Evaluation of the Introduction and Cultivation Demonstration Garden of Manglietia in Haidong Based on Nemerow Method

作　　者：邵金平 施莹 周筑 和丽萍 SHAO Jin-ping;SHI Ying;ZHOU Zhu;HE Li-ping(Yunnan Academy of Forestry and Grassland,Kunming Yunnan 650201,P.R.China)

机构地区：[1]云南省林业和草原科学院,云南昆明650201

出　　处：《西部林业科学》2022年第4期34-39,47,共7页Journal of West China Forestry Science

基　　金：大理市科技示范专项资金项目“大理海东木莲园引种栽培科技示范”(JSF006-2018)。

摘　　要：为了给大理海东新区木莲引种栽培示范园绿地土壤管理和合理施肥提供参考,针对示范园内的土壤养分状况进行调查,选取包含木莲栽植绿地、红橡树栽植绿地、道路绿地、公共设施绿地和高尔夫球场绿地5种绿地类型的土壤作为研究对象,取样测定其土壤容重、pH值、有机质、速效氮、磷、钾,以及全量氮、磷、钾等指标,参照全国第二次土壤普查分级标准评价示范园绿地土壤的养分水平,并采用改进的Nemerow综合肥力指数评价法,对示范园绿地土壤肥力进行综合评价。结果显示:(1)示范园土壤容重、pH值呈弱变异性,有机质、碱解氮、全氮、全磷、速效钾、全钾为中等变异的养分因子,变异系数相对不大,有效磷的变异系数较大,达到76.31%,为强变异性的养分因子;有机质及全氮含量处于中等水平,全磷、全钾及碱解氮含量缺乏,有效磷、速效钾含量丰富,整体处于中等偏上水平。(2)大理海东新区木莲引种栽培示范园绿地土壤综合肥力指数在0.69~1.68之间,平均值为1.14,其土壤肥力处于中等偏贫瘠水平;5种绿地类型其综合肥力水平从大到小为木莲栽植绿地、红橡树栽植绿地、高尔夫球场绿地、道路绿地、公共设施绿地。研究结果表明:土壤含量处于缺乏水平的碱解氮、全磷及全钾是影响研究区域土壤肥力水平的主要因子,也是主要养分限制因子,宜科学施肥以提高木莲属植物的生长力;同时,建议引进一些固氮类树种以增加引种示范园土壤有机质和土壤氮素含量,提高土壤的质量,进而减少化学肥料用量。In order to provide reference for soil management and proper fertilization in the introduction and cultivation demonstration garden of Manglietia in Haidong,New District of Dali,the soil nutrient status in the demonstration garden was investigated,and five green land types of soil fertility were selected as the research object.The soil bulk density,pH,organic matter,available N,P,K and Total N,P,K were measured.The soil fertility of the demonstration garden was comprehensive evaluated according to the classification standard of the second national soil survey,the improved Nemerow comprehensive fertility index was used to evaluate the soil fertility.The results showed that the soil bulk density and pH of the demonstration garden indicated weak variability.Organic matter,alkali hydrolyzable N,total N,total P,available K and total K were the fertility factors with medium variability,and the coefficient of variation was relatively small.The coefficient of variation of available P was large,reaching 76.31%;The contents of organic matter and total N were at the medium fertility level,the contents of total P,total K and alkali hydrolyzable N were lack,and the contents of available P and available K are rich,which is at the upper middle level as a whole.According to the improved Nemero comprehensive fertility index,the results showed that the comprehensive fertility index of green land soil in the demonstration garden of the introduction and cultivation demonstration garden of Manglietia in Haidong New District of Dali was 0.69-1.68,with an average value of 1.14,indicating that the green land soil fertility of the demonstration garden was at a medium to poor level;The comprehensive fertility levels of five green land types from big to small were:Manglietia planting green land>Quercus rubra planting green land>golf course green land>road green land>public facilities green land.It was found that:total P,K and available N were the main factors affecting soil fertility in the study area,and also the main nutrient limiting fa

关 键 词：肥力分析 Nemerow指数评价 引种示范园 大理海东 

分 类 号：S714[农业科学—林学]