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Study on Annual Dynamic Rhythm of N,P and K Content in Leaves of Junzao Jujube(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年11期
Page:
27-29
Research Field:
Publishing date:

Info

Title:
Study on Annual Dynamic Rhythm of N,P and K Content in Leaves of Junzao Jujube
Author(s):
JIANG Ji-yuan; CHEN Qi-ling; LI Ming; ZHENG Qiang-qing; WANG Jing-jing
Forestry and Horticulture Research Institute,Xinjiang Academy of Agriculture and Reclamation Science,Shihezi,Xinjiang 832000
Keywords:
sandy land; Junzao jujube; annual dynamic rhythm
PACS:
S 665.1
DOI:
-
Abstract:
With 6-yearold Junzao jujube planted in the sandy land as tested material,the contents of N,P and K in different leaves of Junzao jujube in different growth stages were measured,and the changes were analysised,in order to determine the suitable sampling stage and the appropriate sampling sites for nutrition diagnosis of Junzao jujube in Pimo Reclamation of Xinjiang.The results showed that,dynamic changes of the contents of N,P and K in different leaves of Junzao jujube had a significant rule.The contents of N,P and K in the leaves living in jujube fresh treetop were higher than that living in the jujube stock.The contents of N and P in different leaves of Junzao jujube showed a decreasing trend in the vegetative growth stage.But the contents of K showed a rising trend.The contents of N and P in different leaves had a similar trend in annual growth cycle,but the contents of K in different leaves were difference.It was considered comprehensively that the suitable sampling stage was early August and the appropriate sampling sites was the leaves living jujube fresh treetop.

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Last Update: 2014-08-04