%0 Journal Article
%T Absorption and utilization of different applied nitrogen forms by winter jujube<br>冬枣对不同形态氮素的吸收与利用
%A PENG Yong
%A PENG Fu-tian
%A ZHOU Peng
%A ZHANG Xiao-yan
%A <br>彭勇
%A 彭福田
%A 周鹏
%A 张小燕
%J 应用生态学报
%D 2007
%I 
%X With pot experiment, this paper studied the absorption and utilization of applied urea N, Gly N and Glu N by two years old winter jujube. The results showed that all of the three N forms could be absorbed by the winter jujube, but the absorption rate of Gly N and Glu N was less than that of urea N. Taking the absorption rate of urea N as 100% , the relative absorption rate of Gly N and Glu N by jujube leaves was 28. 88% and 11.73%, respectively, and the absorbed N was mainly allocated to the leaves and neonatal branches. Jujube roots could absorb 50. 48% of Gly N and 42. 72% of Glu N. The transaminase activity and soluble protein content in jujube leaves were increased after the application of these three N forms, but the leaf nitrate reductase activity was enhanced significantly by urea N, decreased by Gly N, and less affected by Glu N. Compared with urea N, amino acid N could significantly increase the number of colored fruits and their colored area, as well as the content of fruit soluble solid matter.
%K jujube
%K amino acid
%K absorption
%K nitrate reductase
%K fruit color<br>冬枣
%K 氨基酸
%K 吸收
%K 硝酸还原酶
%K 果实色泽
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=53E2B1EAC08A136F&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=B31275AF3241DB2D&sid=38194DB47CE47B20&eid=3ED1EAB217774597&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=5&reference_num=21