| Effect of regulated deficit irrigation on photosynthetic characteristics ＆ water use efficiency of winter wheat |
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| DOI：10.7606/j.issn.1000-7601.2008.03.11 |
| Key Words: regulated deficit irrigation water use efficiency photosynthetic characteristics leaf area index |
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| Abstract: |
| Studies on photosynthetic characteristics ＆ water use efficiency of winter wheat under the condition of controlling rainfall ＆ different regulated deficit irrigations．The results showed that the yield of winter wheat would be better along with the increasing of irrigations．At the same irrigation the yield of jointing water was higher than that of booting water．The WUE of jointing water was the highest among all the treatments． With the increase and postponement of water the decrease of the LAI after blooming got lower．During filling stage the LAI of different treatments was in such order：the LAI of treatment E was number one the LAI of treatment D was ranked the second that of treatment C the third that of treatment B was the fourth and the last one was no irrigation treatment A （CK） and the Fv／F0 value ＆ Fv／Fm value of fluorescence parameters of wheat flags were also improved and Chl content was improved too．But the MDA content was decreased． |