甜柿叶片矿质元素含量的年周期变化规律  

Seasonal variation of the amounts of several mineral elements in the persimmon leaves

作　　者：宋少华[1] 刘勤[2] 蒋振莹 侯应军 余心怡[1] 渠慎春[1] 

机构地区：[1]南京农业大学园艺学院,江苏南京210095 [2]中国科学院南京土壤研究所,江苏南京210008

出　　处：《扬州大学学报（农业与生命科学版）》2016年第1期108-112,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家公益性行业(农业)科研专项(201203047)

摘　　要：以甜柿品种次郎、大秋、甘秋、禅寺丸为材料,连续采集甜柿生育期内土壤样品和叶片样品,进行营养元素含量测定,并对土壤和叶片营养元素含量进行相关分析。结果表明：随着生育期的变化,叶片氮和磷含量呈现下降趋势,钾和铁含量呈先上升后下降的趋势,钙和锰含量呈现上升趋势,磷含量上升后保持相对稳定,锌和铜含量呈现先下降后上升;大秋、甘秋、禅寺丸吸收钾分别集中在5-7月份、5-8月份、5-9月份;甜柿吸收磷主要集中在果实采收后;甜柿在生育期内对钙肥需求量较大;次郎、大秋吸收镁和锰主要集中在5-8月份;甘秋、禅寺丸吸收镁和锰主要集中在5-9月份;在8月之前,次郎、甘秋和禅寺丸叶片可能尚未成熟,树体需要吸收大量铁肥。The content of nutrient elements in soil and leaf samples collected continuously during growing period in the persimmon orchard was determined and analyzed.The results indicated that with the change of growth stage,in the leaves,the concentration of N and P showed an downtrend,but the content of Ca,Mn and Mg presented a rising tendency,among which Mg concentration ascended and then kept stable relatively.K and Fe content increased first,then decreased,while Zn and Cu concentration first decreased then increased.Absorption of K was mainly concentrated in May to July for Taishuu,in May to August for Ganshu,and in May to September for Zenjimaru.Sweet persimmon uptake of P was concentrated in the phase after fruit harvest.Absorption of Mg and Mn was centered in May to August for Jirou and Taishuu,as to Ganshu and Zenjimaru,mainly in May to September.During the reproductive period,Persimmon had a larger demand of Ca.Prior to August,due to immatured leaves of Jirou,Ganshu and Zenjimaru,trees had to absorb a massive amount of Fe.

关 键 词：甜柿 叶片 矿质元素 

分 类 号：S665.2[农业科学—果树学]