Publication Type: | Journal Article |
Year of Publication: | 2010 |
Authors: | Qin, J, HU, F, Li, D, LI, H, Lu, J, Yu, R |
Journal: | Journal of Agronomy and Crop Science |
Volume: | 196 |
Issue: | 6 |
Date Published: | 2010 |
ISBN Number: | 1439-037X |
Keywords: | grain yield, Mulching, non-flooded rice, rotation system, yield decline |
Abstract: | Non-flooded rice cultivation has been proven to be an effective measure to reduce water consumption in drought areas of Southeast China. However, rice cultivation under non-flooded conditions leads to less stable productivity and lower grain yield. The objectives of this study were (1) to compare crop performance and yields among flooded and non-flooded rice over several seasons, (2) to identify the yield performed in non-flooded rice systems over seasons and whether the options which included no-tillage, straw mulching and wet-dry rotation system can narrow the grain yield gap between non-flooded and traditional flooded condition. The results showed the difference between flooded rice (F) and non-flooded rice (NF) with straw mulching was much lower than the difference between F and NF without straw mulching. Within late seasons, the difference of aboveground total biomass between non-flooded rice without mulching and flooded rice gradually widened as the number of cropping seasons increased. Compared with the non-flooded rice without mulching, straw mulching can reduce the decline of aboveground total biomass and grain yield. The yield difference between F and NF treatments became smaller in no-tillage plots than complete tillage plots. It suggested that no-tillage can keep the crop production more stable. In comparison with continuously non-flooded cultivation, our study indicated that the wet-dry rotation system can reduce the yield decline under non-flooded condition. |
URL: | http://dx.doi.org/10.1111/j.1439-037X.2010.00430.x |
Short Title: | Journal of Agronomy and Crop Science |