摘要
为了解南丰蜜橘树体养分丰缺现状,对江西省南丰县5个乡镇的138个果园叶片矿质元素含量进行了测定。结果表明不同乡镇南丰蜜橘叶片N以偏低和适量为主,但也存在超标(偏高或过量)现象;叶片P和K以适量为主,同时偏低比例也较高。中量元素Ca和Mg均不足(缺乏或偏低):其中不同乡镇Ca含量偏低的比例高达90.00%~100%;Mg以缺乏和偏低为主,所占比例为76.67%~96.78%。南丰蜜橘叶片Fe以适量和偏高为主,而Mn含量偏高,占比为76.67%~90.32%。叶片Cu均以适量为主,同时也存在偏低现象。叶片Zn含量以不足为主,不同乡镇的比例为72.00%~96.67%。相关分析显示,南丰蜜橘叶片Mg与P,K与Ca之间存在极显著负相关,但其余大部分元素之间呈正相关。综上所述,南丰蜜橘树体养分不均衡,在生产上需重视Ca、Mg和Zn肥施用,根据实际情况适量补充N、P、K和Cu养分,同时减少树体Fe和Mn元素的摄入量。
To obtain the nutrient status of Nanfeng tangerine,the leaf mineral elements of 138 orchards from 5 townships in Nanfeng County were determined.The tesults showed that leaf N contents of Nanfeng tangerine in different townships were mostly low and optimum,but high or excess content were also observed.Leaf K and P contents were mostly optimum,and the proportion of low contents was high.Both Ca and Mg contents were severe insufficient(deficiency or low).Ca contents were mostly low,and the proportions of different townships were 90.00%-100%.Mg contents were mostly deficient and low,accounting for 76.67% to 96.78%.Leaf Fe contents of Nanfeng tangerine were mostly optimum and high,while leaf Mn contents were mostly high,with proportions of 76.67%-90.32%.The leaf Cu contents were mostly optimum,meanwhile the phenomenon of low Cu was obvious.Leaf Zn was mostly insufficient,accounting for 72.00%-96.67%.Correlation analysis showed that there was a significant negative correlation between Mg and P,as well as K and Ca,but positive correlations were observed among most of the other elements.Overall,the leaf nutrient status of Nanfeng tangerine was in imbalance.For the fertilizer practices,it should be focused on supplements of Ca,Mg and Zn,moderately supplements of N,P,K and Cu according to the specific situation,and decrease in Fe and Mn applications.
作者
魏清江
杨莉
刘德春
胡威
黄国安
蔡伯龄
吴德志
刘勇
WEI Qing-jiang;YANG Li;LIU De-chun;HU Wei;HUANG Guo-an;CAI Bai-ling;WU De-zhi;LIU Yong(College of Agronomy,Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China;Bureau of Nanfeng Tangerine Industry,Nanfeng,Jiangxi 344500,China)
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2019年第6期1072-1078,共7页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金项目（31460496）
江西省柑橘产业技术体系岗位（JXARS-07）~~
关键词
南丰蜜橘
叶片
矿质元素
相关分析
Nanfeng tangerine
leaf
mineral element
correlation analysis
