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Characterization of Leaf Photosynthetic Properties for No-Tillage Rice

作者：

Song Chen;Guo-mian Xia;Wenji Zhao;Feibo Wu;Guoping Zhan

单位：

Agronomy Department, Zhejiang University, Hangzhou 310029, China;Agricultural Bureau of Zhejiang Province, Hangzhou 310021, China;Agronomy Department, Zhejiang University, Hangzhou 310029, Chin;Agricultural Bureau of Xiaoshan, Zhejiang Province, Xiaoshan 311203, China

关键词：

photosynthesis;leaf;rice;no-tillage;plough;yiel

摘要：

A study was conducted to determine the influence of no-tillage cultivation on leaf photosynthesis of rice plants under field conditions. Experiments with the treatments, no-tillage and conventional tillage were carried out at three locations (Jiaxing, Hangzhou, and Xiaoshan, Zhejiang Province, China) for two years (2005 and 2006). Grain yield was constant in Jiaxing, but slightly higher in Hangzhou and Xiaoshan under no-tillage cultivation than that under conventional cultivation. In comparison with the conventional cultivation, no-tillage cultivation showed less biomass accumulation before heading and higher capacity of matter production during grain filling. A significantly higher leaf net photosynthetic rate was observed for the plants under no-tillage than for those under conventional tillage. The fluorescence parameter (Fv/Fm) in leaf did not show any difference between the two cultivations. The effect of cultivation management on transpiration rate (Tr) and SPAD value of rice leaf was dependent on the location and year.

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Characterization of Leaf Photosynthetic Properties for No-Tillage Rice

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