Contents of Main Nutrients in Leaves of‘Jianyang Juyou’

作者：Yanfei HUANG,Guifen CHEN,Yuyi HUANG,Liumei XIONG,Bin LIU

摘要：[Objectives]This study aimed to understand and master the nutritional characteristics of‘Jianyang Juyou’growing in southern Guangxi,with a view to providing a theoretical basis for the rational fertilization of local orchards.[Methods]The leaves of 3-year-old‘Jianyang Juyou’were sampled according to the phenological characteristics,and the dynamics in the contents of macronutrients and main trace elements N,P,K,Ca,Mg,Fe,Zn and B in the leaves were analyzed.[Results]The average contents of N,P and K in the leaves of‘Jianyang Juyou’were in the order as N>K>P.Among them,the content of N reached the highest during the flowering period and then decreased;K maintained a high content around the fruit enlargement period;the Ca content of leaves is significantly greater than that of Mg,and the peak value of Ca content appeared during the flowering and color change periods;the Mg content increased from the germination stage to the late fruit enlargement stage,while decreased in the color change stage;the average contents of main trace elements in the leaves ranked as Fe>B>Zn;the Fe content gradually increased from the germination stage to the physiological fruit drop stage,and slowly decreased after the fruit enlargement;the Zn content peaked in the physiological fruit drop period and fruit maturity period;and the B content of the leaves was 81.6-87.2 mg/kg during the flowering period,the early period of fruit enlargement,the late period of fruit enlargement,and the color change period.[Conclusions]During the phenological period,the leaves of‘Jianyang Juyou’had a higher demand for N,and the peak absorption period was mainly concentrated from the germination period to the early period of fruit enlargement;the demand for K was second only to N,and the peak absorption period was concentrated in the early stage of fruit enlargement to the mature stage;and the demand for P was minimal.In the production of‘Jianyang Juyou’Mg played an important role in promoting budding and blooming,preserving flowers and frui

发文机构：Agricultural Resources and Environment Research Institute

关键词：JianyangJuyouLEAFMACRONUTRIENTTraceelement

分类号： Z88