| Co-Investigator(Kenkyū-buntansha) |
波多野 隆介 北海道大学, 農学研究院, 農学研究院研究員 (40156344)
柏木 淳一 北海道大学, 農学研究院, 講師 (40241369)
内田 義崇 北海道大学, 農学研究院, 准教授 (70705251)
荒木 肇 北海道大学, 北方生物圏フィールド科学センター, 教授 (30183148)
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| Budget Amount *help |
¥44,590,000 (Direct Cost: ¥34,300,000、Indirect Cost: ¥10,290,000)
Fiscal Year 2022: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2018: ¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
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| Outline of Final Research Achievements |
Influence of frequent inter-tillage weeding on rice yield and soil condition in paddy field without fertilizers and agricultural chemicals has been investigated for 5 years. Frequent inter-tillage with rice straw application recovered the soil fertility well and the brown rice yield about 400g/m2 could be maintained.
We have clarified strontium adsorption and transport phenomena in soil, based on theory and experiments. We have developed a simple and accurate measurement method for a surfactant, which is involved in pollution and cleanup, and clarified their adsorption and transport characteristics in soil.
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