茶园土壤交换性钙镁离子含量及其与主要养分相关性  

Content of Exchangeable Calcium and Magnesium Ions in Tea Gar⁃den Soil and Their Correlation with Main Nutrients

作　　者：彭赞文[1] 刘茜[1] 瞿小杰 廖恒 PENG Zanwen;LIU Qian;QU Xiaojie;LIAO Heng(Wuzhou University,Wuzhou 543002,China)

机构地区：[1]梧州学院,梧州543002

出　　处：《吉林农业大学学报》2023年第1期77-82,共6页Journal of Jilin Agricultural University

基　　金：广西科技重大专项(桂科AA20302018-8);梧州市科技计划项目(201902030);大学生创新创业训练项目(S202211354015)。

摘　　要：为了解六堡茶园土壤交换性钙、交换性镁含量特征及其影响因素,对六堡茶主要产区茶园土壤采样分析。结果表明:六堡茶园土壤交换性钙含量为96.56~539.84 mg/kg,总体含量偏低;交换性镁含量为83.99~554.74 mg/kg,总体含量丰富。六堡茶园土壤交换性钙镁的比值为0.51~1.87,整体偏低。六堡茶园土壤交换性钙含量与土壤pH、全磷、全氮、有效磷、碱解氮含量呈正相关,与有机质、全钾、速效钾含量呈负相关,其中交换性钙含量与pH呈极显著正相关,与全氮、碱解氮含量表现出显著的正相关。交换性镁含量与pH、全磷、全氮、碱解氮含量呈正相关,与有机质、全钾、有效磷、速效钾含量呈负相关,其中交换性镁含量与pH呈极显著正相关。建议六堡茶园适量补施钙肥、氮肥,控制镁肥施用。To study the spatial characteristics of exchangeable calcium(Ca)and magnesium(Mg)content of Liubao tea garden soil and their influencing factors,soil samples from Liubao tea garden were tested.The results showed that the average content of exchangeable calcium in soil was between 96.56-539.84 mg/kg,and the overall content was low.The average content of exchangeable calcium in soil was between 83.99-554.74 mg/kg,and the overall content was rich.The Ca/Mg ratio was 0.51-1.87,which was generally low.The content of exchangeable calcium in the soil of Liubao tea garden was positively correlated with soil pH,total phosphorus,total nitrogen,available phosphorus,and alkaline-hydrolytic-nitrogen,and negatively correlated with organic matter,total potassium,and available potassium.Among them,the content of exchangeable calcium was extremely significantly positively correlated with pH,and significantly positively correlated with total nitrogen and alkalinehydrolytic-nitrogen.The content of exchangeable magnesium was positively correlated with pH,total phosphorus,total nitrogen,and alkaline-hydrolytic-nitrogen,and negatively correlated with organic matter,total potassium,available phosphorus,and available potassium.The content of exchangeable magnesium was extremely significantly positively correlated with pH.Based on this study,we con⁃clude that calcium fertilizer and nitrogen fertilizer should be supplemented appropriately,and magne⁃sium fertilizer should be controlled in Liubao tea garden.

关 键 词：六堡茶园 土壤 交换性钙 交换性镁 

分 类 号：S571.1[农业科学—茶叶生产加工] S153.6[农业科学—作物学]