土施和枝干涂抹^15N-尿素对氮素在甜樱桃树不同部位分配及利用的影响  

Effect of ^(15)N daubing and soil fertilizations on distribution and utilization of urea in different parts of sweet-cherry

作　　者：葛顺峰[1] 赵凤霞[2] 姜远茂[1] 彭福田[1] 房祥吉[1] 

机构地区：[1]山东农业大学作物生物学国家重点实验室,山东农业大学园艺科学与工程学院,山东泰安271018 [2]中国农业大学食品科学与营养工程学院,北京100193

出　　处：《植物营养与肥料学报》2011年第1期254-258,共5页Journal of Plant Nutrition and Fertilizers

基　　金：国家“十一五”科技支撑项目(2008BADA4B05)资助

摘　　要：大田条件下利用15N示踪技术,研究了土施和枝干涂抹15N-尿素对氮素在甜樱桃树不同部位分配及利用的影响。结果表明:果实采收期测定两种不同施肥方式各器官的Ndff%存在差异,土壤施肥处理细根的Ndff%最高为2.36%;枝干涂抹处理短梢的Ndff%最高为4.26%。土壤施肥处理粗根的15N分配率最高为22.23%,其次为短梢叶和果实;枝干涂抹处理中心干皮部的15N分配率最高为26.14%,其次为中心干木质部和果实。两种不同施肥方式下植株营养器官和贮藏器官的15N分配率差异极显著。果实采收期测定枝干涂抹处理和土壤施肥处理的15N利用率分别为20.64%和14.74%。The isotope 15N-urea is used to study the characteristics of 15N distribution and utilization of ＇Zaodaguo＇ sweet-cherry by daubing on the trunks and applying in soil before sprout under the field condition.The results show that the Ndff% values of different organs under the fertilizations are different at the fruit harvest stage.Ndff% values of fine root are highest when applying in soil,reaching to 2.36%;while in the spur is highest when daubing on the trunks,reaching to 4.26%.The 15N-urea partition ratio of large root is highest when applying in soil,reaching to 22.23%,followed by leaves of spur and fruit;When daubing on the trunks,the 15N-urea partition ratio of cortex of trunk is highest reaching to 26.14%,followed by xylem of trunk and fruit.There was significantly difference of 15N-urea partition ratio of nutrition organs and storage organs between two fertilizer manners.Measured at fruit harvest stage,15N utilization rate of daubing on the trunk and applying in soil were 20.64% and 14.74%,respectively.

关 键 词：甜樱桃 15N 土壤施肥 枝干涂抹 吸收 分配 利用 

分 类 号：S662.5[农业科学—果树学] S147.2[农业科学—园艺学]