Effects of the combination of sloped farm field, crawler compaction and open channels on moisture and hardness and temperature of the surface soil layer after disappearance of the snow cover
2009
Matsuda, S.(National Agricultural Research Center for Western Region, Zentsuji, Kagawa (Japan). Shikoku Research Center) | Mukai, H.
When melt water remains on the soil surface and in surface soil layer for a long time in rotational paddies in Hokkaido, machine work in the early spring is delayed, resulting in growth delay of crops and decrease in income. With the expectation that surface drainage would be effective in such fields, the effects of the combination of sloped farm field, crawler compaction and open channels on volumetric water content, soil hardness and soil temperature of the surface soil layer after disappearance of the snow cover were examined. It was found that volumetric water content of surface soil layer after disappearance of the snow cover in a sloped area in which the combination of sloped farm field, crawler compaction and open channels were used was lower than that in the conventional area in which only open channels were used. Soil hardness and soil temperature in the daytime in the sloped area were higher than those in the conventional area. The combination of sloped farm field, crawler compaction and open channels seems to accelerate the surface drainage of melt water and to facilitate machine work after disappearance of the snow cover.
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