| Effects of different tillage systems on the photosynthesis functions, grain yield and WUE in winter wheat |
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| DOI：10.7606/j.issn.1000-7601.2008.05.04 |
| Key Words: conversation tillage photosynthesis function winter wheat grain yield WUE |
| Author Name | Affiliation | | WU Jinzhi | Agricultural College, Henan University of Science and Technology, Luoyang, Henan 471003, China | | HUANG Ming | Agricultural College, Henan University of Science and Technology, Luoyang, Henan 471003, China | | LI Youjun | Agricultural College, Henan University of Science and Technology, Luoyang, Henan 471003, China | | CHEN Mingcan | Agricultural College, Henan University of Science and Technology, Luoyang, Henan 471003, China | | YAO Yu-qing | Luoyang Academy of Agricultural Sciences, Luoyang, Henan 471022, China | | GUO Dayong | Agricultural College, Henan University of Science and Technology, Luoyang, Henan 471003, China | | HUANG Haixia | Agricultural College, Henan University of Science and Technology, Luoyang, Henan 471003, China |
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| Abstract: |
| The effects of four different tillage systems including reduce tillage (RT), no tillage (NT), sub soiling tillage(ST) and conventional tillage(CK) on LAI, dry matter partitioning, photosynthesis characteristics, grain yield and WUE in winter wheat were determined. The results showed as following: after treating with ST and NT, the degradation of chlorophyll pigment can be restrain effectively, the LAI will stay at a high level, and the photosynthesis characteristics of flag leaf will be improved. Therefore, the dry matter partitioning in wheat will be promoted. After treating with ST, the grain yield and WUE will improve by 9.26% and 10.29%, and with NT these items will be 10.22% and 15.57% respectively. Compared with CT, the Pn, Fv/F0 and Fv/Fm of wheat flag leaf in the later grain-filling stage were increased by 5.48%, 26.72% and 4.88% respectively. The significance of φP SⅡand 1-qP/qN with ST were not evident compared to other tillage treatments. |
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