%0 Journal Article
%T Characteristics of urea 15N absorption, allocation, and utilization by sweet-cherry (Prunus avium L.).<br>甜樱桃对15N尿素的吸收、分配和利用特性
%A ZHAO Feng-xia
%A JIANG Yuan-mao
%A PENG Fu-tian
%A GAO Xiang-bin
%A LIU Bing-hua
%A WANG Hai-yun
%A ZHAO Lin
%A <br>赵凤霞
%A 姜远茂
%A 彭福田
%A 高相彬
%A 刘丙花
%A 王海云
%A 赵林
%J 应用生态学报
%D 2008
%I 
%X With five-year old 'Zaodaguo' sweet-cherry (Prunus avium L.) as test material, this paper studied the characteristics of its urea 15N absorption, allocation, and utilization when applied before bud-break. The results showed that the Ndff of different organs increased gradually with time, and was higher in fine roots and storage organs at full-blooming stage. At fruit core-hardening stage, the Ndff of long shoots and leaves increased quickly, reaching to 0.72% and 0.59% , respectively. From fruit core-hardening to harvesting stage, the Ndff of fruit had a rapid increase, with the peak (1.78%) at harvesting stage. After harvest, the Ndff of neonatal organs increased slowly while that of storage organs increased quickly. At full-blooming stage, the absorbed 15N in roots was firstly allocated to storage organs, with the highest allocation rate (54.91%) in large roots. At fruit core-hardening stage, the allocation rate in fine roots and storage organs decreased from 85.43% to 55.11%, while that in neonatal branches and leaves increased to 44.89%. At harvesting stage, the allocation rate in different organs had no significant change, but after harvest, the absorbed 15N had a rapid translocation to storage organs, and the allocation rate in fine roots and storage organs reached the highest (72.26%) at flower bud differentiation stage. The 15N allocation rate in neonatal branches and leaves at flower bud differentiation stage was decreased by 19.31%, compared with that at harvesting stage. From full-blooming to flower bud differentiation stage, the utilization rate of urea 15N was increasing, and reached the peak (16.86%) at flower bud differentiation stage.
%K 甜樱桃
%K 15N
%K 吸收
%K 分配
%K 利用
%K 甜樱桃
%K 尿素
%K 根系吸收
%K 分配率
%K 利用特性
%K absorption
%K urea
%K Characteristics
%K allocation
%K utilization
%K 趋势
%K 利用率
%K 植株
%K 氮素营养
%K 变化
%K 地上部
%K 粗根
%K 增长减慢
%K 花芽分化期
%K 果实采收
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=9309D6C25166468BDC8F424C7BE98601&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=38B194292C032A66&sid=710C005323C0774A&eid=DC2727B6AC017B3F&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=29