Effect of Partial Root-Zone Irrigating Deuterium Oxide on the Properties of Water Transportation and Distribution in Young Apple Trees

Partial root-zone irrigation （PRI） has been proved to be an optimal water-saving irrigation technology, however, few studies were done on water transportation and distribution under PRI. The present study was performed to investigate the water transportation and distribution among the wet and dry ro...

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Bibliographic Details
Published inJournal of Integrative Agriculture Vol. 13; no. 6; pp. 1268 - 1275
Main Authors LIU, Song-zhong, ZHANG, Qiang, LIU, Jun, SUN, Jian, WEI, Qin-ping
Format Journal Article
LanguageEnglish
Published Science Press 01.06.2014
Institute of Forestry&Pomology, Beijing Academy of Agriculture&Forestry Sciences, Beijing 100093, P.R.China
Elsevier
Subjects
apple
apple D2O partial root-zone drying relative abundance transportation distribution
D2O
distribution
partial root-zone drying
relative abundance
transportation
分配
性能
根区
氘水
氧化
水运输
节水灌溉技术
苹果幼树
D2O
partial root-zone drying
apple
relative abundance
distribution
transportation
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Summary:Partial root-zone irrigation （PRI） has been proved to be an optimal water-saving irrigation technology, however, few studies were done on water transportation and distribution under PRI. The present study was performed to investigate the water transportation and distribution among the wet and dry root-zones and the shoot using deuterium water （D2O） in 1/4 root-zone PRI experiment. It also aimed to determine and analyze the D2O relative abundance within different types of roots and shoots. The results indicated that water could be transported from roots in wet root-zone to roots in dry root-zone and shoots within 2 h after irrigation. Water transportation in roots of wet-zone was carried out by absorbing root, 1-2 mm root, 2-5 mm root, and〉5 mm root progressively, while through a reverse process in three dry root-zones. In shoots, water was transported to trunk, central trunk, annual branches, shoot and leaf progressively. Thus in the young apple trees subjected to PRI, water was distributed ifrst in the roots, including the roots in the wet and dry root-zones, to satisfy the water need of roots itself, and then transported to the shoot within hours of irrigation.
Bibliography:apple, D2O, partial root-zone drying, relative abundance, transportation, distribution
10-1039/S
Partial root-zone irrigation （PRI） has been proved to be an optimal water-saving irrigation technology, however, few studies were done on water transportation and distribution under PRI. The present study was performed to investigate the water transportation and distribution among the wet and dry root-zones and the shoot using deuterium water （D2O） in 1/4 root-zone PRI experiment. It also aimed to determine and analyze the D2O relative abundance within different types of roots and shoots. The results indicated that water could be transported from roots in wet root-zone to roots in dry root-zone and shoots within 2 h after irrigation. Water transportation in roots of wet-zone was carried out by absorbing root, 1-2 mm root, 2-5 mm root, and〉5 mm root progressively, while through a reverse process in three dry root-zones. In shoots, water was transported to trunk, central trunk, annual branches, shoot and leaf progressively. Thus in the young apple trees subjected to PRI, water was distributed ifrst in the roots, including the roots in the wet and dry root-zones, to satisfy the water need of roots itself, and then transported to the shoot within hours of irrigation.
http://dx.doi.org/10.1016/S2095-3119(13)60623-1
http://www.chinaagrisci.com/Jwk_zgnykxen/fileup/PDF/2014V13(6)-1268.pdf
ISSN:2095-3119
2352-3425
DOI:10.1016/S2095-3119(13)60623-1