Journal of Food, Agriculture and Environment
Vol 11,
Issue 3&4,2013
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Dry matter, grain yield, and evapotranspiration of winter wheat under deficit irrigation in North China Plain
Author(s):
Quanqi Li 1,
Kun Lang 1, Quanru Liu 1, Chengyue Bian 1, Xinhui Liu 1, Guoqing Chen 2*Recieved Date: 2013-06-18, Accepted Date: 2013-10-08
Abstract:In order to develop water saving techniques in North China Plain, during 2006 - 2007 and 2007 - 2008 winter wheat growing seasons, field experiment involving winter wheat with 1, 2, and 3 irrigation applications at jointing, heading, or milking stages was conducted, and total irrigation water was all controlled at 120 mm. The results indicated that after anthesis, irrigated 60 mm each at jointing and heading stages could increase above-ground dry matter, which resulted in higher contribution of dry matter remobilization to grain yield. During the both growing seasons, increased irrigation times resulted in low evapotranspiration, and irrigated 60 mm each at jointing and heading stages resulted in the highest grain yield and water use efficiency (WUE). The study showed that in order to achieve reasonable grain yield and WUE, wither wheat should be irrigated at 60 mm each at jointing and heading stages in North China Plain.
Keywords:Deficit irrigation,
dry matter accumulation, growth stage, water use efficiency, winter wheatJournal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 2593-2596
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