不同海拔的大别山山核桃林地土壤性质和叶片营养元素分析  

Analysis of soil properties and leaf nutrient elements in Carya dabieshanensis woodlands at different elevations of Dabieshan

作　　者：饶盈 王江铭 朱先富 夏国华[2] RAO Ying;WANG Jiangming;ZHU Xianfu;XIA Guohua(Tianmushan Forest Farm of Lin’an District,Hangzhou 311311;Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions/School of Forestry and Bio-technology,Zhejiang A&F University,Hangzhou 311300;Jinzhai Fudong Ecology Agricultural Development Co.Ltd.,Jinzhai 237341)

机构地区：[1]浙江省杭州市临安区天目山林场,杭州311311 [2]浙江省森林芳香植物康养功能研究重点实验室/浙江农林大学林业与生物技术学院,杭州311300 [3]金寨县富东生态农业开发有限公司,金寨237341

出　　处：《安徽农业大学学报》2024年第1期96-101,共6页Journal of Anhui Agricultural University

基　　金：浙江省农业(果品)新品种选育重大科技专项(2021C02066-12);安徽省科技厅长三角科技创新联合攻关专项(202004G01020005);浙江省科技厅科技援助项目(2020C26007)共同资助。

摘　　要：为了比较不同海拔大别山山核桃林地土壤性质和叶片营养元素的差异及相关性,为大别山山核桃林地科学施肥和养分管理提供参考,采用酸度计法、重铬酸钾容量法、半微量凯氏定氮法、碱解扩散法、盐酸氟化铵浸提-分光光度法和醋酸铵-火焰光度计法分别测定了不同海拔大别山山核桃林地0~30 cm土层p H、有机质、速效氮、速效磷、速效钾,采用原子吸收分光光度法测定了土壤和叶片的氮、磷、钾、钙、镁、锌含量,并进行显著性分析和相关性分析。结果表明:(1)不同海拔大别山山核桃林地土壤速效磷、全氮、全磷、全钾、钙、镁和锌含量存在显著性差异(P<0.05),大别山山核桃叶片钾、钙和镁含量存在显著性差异(P<0.05)。(2)不同海拔大别山山核桃林地土壤p H随着海拔升高而降低,而有机质和氮含量随着海拔升高而升高;叶片钾含量随海拔升高而升高,钙和镁含量则是随着海拔升高而降低,其余营养元素受海拔影响较小。(3)大别山山核桃叶片营养元素之间、土壤营养元素之间、以及叶片与土壤之间存在一定相关性,其中土壤间相关性达到显著水平的有2对,叶片间相关性达到显著水平的有4对,土壤和叶片间相关性达到显著水平的有2对(P<0.05)。大别山山核桃林地土壤平均p H值为5.18,偏酸性;有机质含量均值为5.07%;速效氮、速效磷含量较高,速效钾较匮乏;微量元素平均含量依次为Mg>Ca>Zn。建议增施生石灰进行土壤改良,减少氮肥施用,增施磷钾肥,尤其是钾肥,将化学肥料和有机肥料混合增施,保持土壤养分平衡。In order to compare the differences and correlations of soil properties and leaf nutrients in woodlands of Carya dabieshanensis at different elevations of Dabieshan,and to provide references for scientific fertilization and nutrient management,the soil pH,organic matter,available N,available P and available K contents were determined by the acidity meter method,potassium dichromate volumetric method,semi-micro Kjeldahl method,alkaline diffu-sion method,ammonium fluoride hydrochloride leaching-spectrophotometric method and ammonium acetate-flame photometric method,respectively.The N,P,K,Ca,Mg and Zn contents in the soil and leaves were determined by atomic absorption spectrophotometry at different elevations of C.dabieshanensis woodlands,and significance and correlation analyses were performed.The results were:(1)There were significant differences(P<0.05)in the con-tents of available P,TN,TP,TK,Ca,Mg and Zn in the soils of C.dabieshanensis woodlands at different elevations,and significant differences(P<0.05)in the contents of K,Ca and Mg in the leaves of C.dabieshanensis.(2)Soil pH decreased with increasing the elevation,while the organic matter and N content increased with increasing elevation in C.dabieshanensis woodlands at different elevations.The K content of leaves increased with elevation,while the contents of Ca and Mg decreased with the elevation,and the remaining nutrients were less affected by the elevation.(3)There were some correlations among nutrient elements of C.dabieshanensis leaves,among soil nutrient elements,and between the leaves and soil,of which,two pairs of soil correlations reached significant levels,four pairs of leaf correlations reached significant levels,and two pairs of soil and leaf correlations reached significant levels(P<0.05).In conclusion,the average pH of C.dabieshanensis woodland was 5.18,which was acidic;the average organic mat-ter content was 5.07%;the available N and available P contents were high,and the available K was scarce;the aver-age contents of trace elements were M

关 键 词：大别山山核桃 土壤性质 叶片营养元素 相关性 

分 类 号：S664.1[农业科学—果树学]