缺镁温州蜜柑果园的施镁效应研究  

Effect of magnesium (Mg) application in Satsuma Mandarin orchard with Mg nutrient deficiency

作　　者：温明霞[1] 吴韶辉[1] 王鹏[1] 金国强 朱潇婷 石学根[1] 

机构地区：[1]浙江省柑桔研究所,浙江台州318026 [2]浙江省临海市林业特产局,浙江临海317000

出　　处：《果树学报》2015年第1期63-68,共6页Journal of Fruit Science

基　　金：国家现代农业(柑橘)产业技术体系建设-华东柑橘综合试验站经费资助项目

摘　　要：【目的】研究缺镁果园的施镁效应,为合理施镁提供理论依据。【方法】以温州蜜柑为研究对象,在缺镁的酸性土壤果园进行施镁试验,分析镁对柑橘叶片和果实中镁素营养、叶绿素、淀粉、可溶性糖含量的影响。【结果】叶片镁含量均随叶龄的增加而降低,施镁处理中的镁含量、叶绿素含量、可溶性糖含量等均显著高于对照,而淀粉含量则低于对照;结果枝叶片中的镁含量与叶绿素含量相对值以及果实镁含量均呈显著正相关关系。【结论】因此,土壤施镁和叶片喷镁相结合可以显著增加柑橘叶片的镁含量,促进镁向果实的运输,提高果实的镁含量和可溶性糖含量,缓解果实膨大后期叶片黄化现象的出现。【Objective】The goal of this research was to explore the mitigation solutions for magnesium(Mg) nutrition deficiency in Satsuma Mandarin orchard.【Method】The experiment was carried out in a citrus orchard with Mg deficient soil and low p H. Two treatments were designed to study the effect of Mg application in Satsuma Mandarin orchard. The concentration of Mg and the content of SPAD,starch and soluble sugar in citrus leaves and fruits were measured.【Result】The results showed that Mg content in leaves decreased with the ageing of leaves. Compared with control(CK),the application of Mg fertilizer significantly increased the content of Mg and SPAD in leaves and the content of soluble sugar in fruits.However,a lower content of starch was observed after the application of Mg. The content of Mg in leaves was significantly positive correlated with the content of SPAD and the content of Mg in fruits.【Conclusion】Based on the results,it could be concluded that the application of Mg fertilizer in soil combined with foliar spray can alleviate the leaf etiolation of Satsuma mandarin in the late fruit expanding period due to the increase of Mg content in leaves,enhancing the transport of Mg to fruit and the increase of Mg content and soluble sugar content in fruit.

关 键 词：温州蜜柑果园 镁素营养 施镁效应 

分 类 号：S666.1[农业科学—果树学]