宁夏红枣主产区土壤养分的含量  

Nutritional Content of Soils in Red Jujube Main Producing Areas in Ningxia

作　　者：李慧[1] 李百云[1] 魏天军[1] LI Hui;LI Baiyun;WEI Tianjun(Institute of Germplasm Resources,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002,China)

机构地区：[1]宁夏农林科学院种质资源研究所,宁夏银川750002

出　　处：《贵州农业科学》2019年第1期30-35,42,共7页Guizhou Agricultural Sciences

基　　金：宁夏农林科学院"十三五"一二三产业融合发展科技创新示范项目(YES-2016-07-03);宁夏农林科学院"十三五"重点科研项目(NKYZ-2016-07-03);宁夏农林科学院自主科技成果孵化资金项目(NNKCGFH-2017-19;NNKZZCGZH-2018-11)

摘　　要：为宁夏红枣的科学施肥提供理论依据,以灵武、中宁、中卫和同心4个产区的盛果期枣园为研究对象,通过测定其土壤养分的含量,并对其进行相关性和主成分分析。结果表明:宁夏枣园土壤有机质、全氮、全磷、全钾、速效氮、速效磷、速效钾、有效锌、有效锰、有效铜和有效铁的平均含量分别为5.18g/kg、0.38g/kg、0.48g/kg、16.56g/kg、25.95mg/kg、4.02mg/kg、74.34mg/kg、0.48mg/kg、4.14mg/kg、1.06mg/kg和7.36mg/kg,与全国第2次土壤普查结果相比,有机质、全氮和速效氮含量极缺乏,速效磷、有效锌和有效锰含量缺乏,全磷、速效钾和有效铁含量中等,全钾和有效铜含量丰富,且土壤养分表聚化现象明显。经主成分分析,从13个土壤养分指标中提取3个主成分,积累方差贡献率达78.363%,4个产区土壤养分综合得分依次为灵武>中宁>同心>中卫。The content of different nutrients in soils from jujube orchards of four main producing areas was determined and analyzed by the correlation and principal component analysis to provide the theoretical basis for scientific fertilization of red jujube in Ningxia.Result:The average content of organic matter,total N,total P,total K,rapid available N,rapid available P,rapid available K,available Zn,available Mn,available Cu and available Fe in soils of jujube orchards is 5.18 g/kg,0.38 g/kg,0.48 g/kg,16.56 g/kg,25.95 mg/kg,4.02 mg/kg,74.34 mg/kg,0.48 mg/kg,4.14 mg/kg,1.06 mg/kg and 7.36 mg/kg respectively.The organic matter,total N and rapid available N content,rapid available P available Zn and available Mn content,total P,rapid available K and available Fe content and total K and available Cu content in soils of jujube orchards is at extreme deficiency level,deficiency level,moderate level and abundant level compared with the results from the Second National Soil Survey respectively,which indicates there is an obvious phenomenon in surface accumulation of soil nutrients.The principal component analysis shows that the accumulated variance contribution rate of three principal components selected from 13 soil nutrient indexes reaches 78.363%.The comprehensive score of soil nutrients in four producing areas is Lingwu >Zhongning >Tongxin >Zhongwei.

关 键 词：红枣 主产区 土壤养分 宁夏 

分 类 号：S655.1[农业科学—果树学]