| Effect of water and fertilizer interaction on photosynthetic characteristics of winter wheat |
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| DOI：10.7606/j.issn.1000-7601.2006.02.13 |
| Key Words: winter wheat water and fertilizer interaction photosynthetic characteristics |
| Author Name | Affiliation | | ZHANG Yi-zhang | Center for Agricultural Resources Research,Institute of Genetic and Developmental Biology ,CAS,Shijiazhuang 050021,China；Graduate School of the Chinese Academy of Science,Beijing 10039,China | | ZHANG Qiu-ying | Institute of Mountain Hazards and Environment,CAS,Chengdu 610041,China；Graduate School of the Chinese Academy of Science,Beijing 10039,China | | SUN Fei-fei | Center for Agricultural Resources Research,Institute of Genetic and Developmental Biology ,CAS,Shijiazhuang 050021,China；Graduate School of the Chinese Academy of Science,Beijing 10039,China | | DONG Bao-di | Center for Agricultural Resources Research,Institute of Genetic and Developmental Biology ,CAS,Shijiazhuang 050021,China；Graduate School of the Chinese Academy of Science,Beijing 10039,China | | CHEN Si-long | Center for Agricultural Resources Research,Institute of Genetic and Developmental Biology ,CAS,Shijiazhuang 050021,China；Graduate School of the Chinese Academy of Science,Beijing 10039,China | | LIU Meng-yu | Center for Agricultural Resources Research,Institute of Genetic and Developmental Biology ,CAS,Shijiazhuang 050021,China |
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| Abstract: |
| Effect of water and fertilizer interaction on photosynthetic characteristics of wheat variety 3 279 was studied by pot cultivation under rainproof shelter with 7 water and fertilizer interaction treatments.The results showed that,under different treatments,the photosynthetic rate,the stomatal conductance and the intercellular CO2 concentration of winter wheat were different,but there was a balance relation among these three characters.Deep fertilization could maintain a high photosynthetic rate in the late stage of wheat growing,but reduced the stomatal conductance and the water transpiration,being effective for water saving.Under the same water condition,compared to the treatment of irrigation under fertilizer,that above fertilizer was affected little by water and caused a rapid drop of chlorophyll content.Under the treatment of deep fertilization and irrigation at 20 cm,the photosynthetic rate of wheat after blooming was the highest,the stomatal conductance was low,and the intercellular CO2 concentration was high,showing a considerable water-saving potential. |
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