Effect of Alternate Partial Root-Zone Drip Irrigation on Growth and Water Use Efficiency of Cotton in Arid Regions
SU Litan
HU Dan·Tumarbay
ZHANG Zhan-yu
Abstract：A field experiment was conducted to research the effect of alternate partial root-zone drip irrigation (APRD) and conventioal drip irrigation(CRD) on the growth and water use efficiency(WUE) of cotton.Results showed that although the photosynthesis rate(P_n) under APRD was not significantly affected compared with CRD,the cotton height was higher under APRD than under CRD,and the water use efficiency was lower under APRD than under CRD.Meanwhile,the compensating effects of root growth was observed,thereby there were an obvious improving role for cotton root system growth with APRD irrigation.Water use efficiency was improved through the evapo-transpiration can be reduced under APRD comparison with CRD.Results also showed that cotton yield under APRD had no significant difference with 20.3 % water being saved,which showed an remarkable water-saving effect.
Keywords：arid regionsalternate partial root-zone drip irrigationcottonwater use efficiency
Publication Date：2009-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 50-54 )