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Angiosperm Flora of India

The Effect of Mulching, Tillage and Rotation on Yield in Non-flooded Compared with Flooded Rice Production

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
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