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- W2056610755 abstract "Due to the recent regulation of rice production in Japan, it has become necessary toconvert rice paddy to other field crop production. To achieve this, drainage conditions, especiallyfor surface drainage, must be improved. We proposed the introduction of a slight slope to improvesurface drainage, but the optimal slope must still be determined in order to prevent soil erosioncaused by excessive slope, as well as increased cost. In Japan, a 0.1% slope has recently come intowidespread use and, therefore, the impact to surface drainage must be quantified. In this report,observations were carried out to quantify the impact of a 0.1% slope for converted rice paddy, andthe following results were obtained: 1. An approximate 0.1% slope enables improvement of 46% of the soil surface saturation areacompared with that of flat conditions about 10 hours after inundation. 2. Inundation water remains on a flat field, while that on a sloped field moves downward towardthe slope end. These are important factors on which to base the introduction of a slight slope to rice paddy forsurface drainage improvement. However, the optimal slope should be decided from variousperspectives including engineering, agronomy and economics." @default.
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- W2056610755 date "2004-01-01" @default.
- W2056610755 modified "2023-09-27" @default.
- W2056610755 title "EFFECT OF SLOPE ON SURFACE DRAINAGE IN CONVERTED RICE PADDY" @default.
- W2056610755 doi "https://doi.org/10.13031/2013.16453" @default.
- W2056610755 hasPublicationYear "2004" @default.
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