RICE SCIENCE ›› 2007, Vol. 14 ›› Issue (4): 283-288 .

• Research Paper • Previous Articles     Next Articles

Characterization of Leaf Photosynthetic Properties for No-Tillage Rice

CHEN Song 1, XIA Guo-mian 2, ZHAO Wei-ming 3, WU Fei-bo 1, ZHANG Guo-ping 1   

  1. 1 Agronomy Department, Zhejiang University, Hangzhou 310029, China; 2 Agricultural Bureau of Xiaoshan, Zhejiang Province, Xiaoshan 311203, China; 3 Agricultural Bureau of Zhejiang Province, Hangzhou 310021, China
  • Received:2007-06-04 Online:2007-12-28 Published:2007-12-28
  • Contact: ZHANG Guo-ping
  • Supported by:

    the Department of Science and Technology of Zhejiang Province (Grant No.2005C12024).

Abstract: 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.

Key words: photosynthesis, leaf, rice, no-tillage, plough, yield