| Project/Area Number |
11556003
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 展開研究 |
|---|
| Research Field |
作物学
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
GOTO Yusuke Tohoku University, Graduate School of Agricultural Science, Associate Professor, 大学院・農学研究科, 助教授 (80122919)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SAITO Mitsuo Miyagi Agricultural College, Department of Agricultural Science, Professor, 農業科, 教授 (50196010)
NAKAJIMA Takayuki Tohoku University, Graduate School of Agricultural Science, Research Assistant, 大学院・農学研究科, 教務職員 (80241553)
NAKAMURA Teiji Tohoku University, Graduate School of Agricultural Science, Assistant Professor, 大学院・農学研究科, 助手 (70155844)
KATO Toru Miyagi Agricultural College, Department of Agricultural and Rural Engineering, Professor, 農業土木科, 教授 (70070224)
NAKAMURA Satoshi Miyagi Agricultural College, Department of Agricultural Science, Lecturer, 農業科, 講師 (00289729)
|
|---|
| Project Period (FY) |
1999 – 2001
|
| Project Status |
Completed (Fiscal Year 2001)
|
| Budget Amount *help |
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 2001: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2000: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1999: ¥7,100,000 (Direct Cost: ¥7,100,000)
|
|---|
| Keywords | Cultivation method / Deep-irrigation / Environmental protection / Irrigation / Paddy field / Rice / Storage of water / Yield |
|---|
| Research Abstract |
We developed a deep-irrigation method to grow rice at a steady high yield in the Tohoku district, while increasing the function of water storage, which is one of the functional benefits of paddy fields in environmental protection. The main objective for the promotion of the water storage function is to delay the runoff into the sea of the river water, which is abundant due to snow-melting water and rainfall in the rainy season, until summer when there is often a shortage of water supply. We designed a water managing system taking into consideration the following points : 1 : To increase the water storage function of the paddy field, the water is made as deep as possible using the present levee (the maximum water depth, 25 - 30 cm). 2 : Considering the steady high yield in the Tohoku district, the water depth at the meiotic stage is made 25 - 30 cm, to protect from low-temperature. 3 : The water depth is increased continuously until mid July when water is abundant, assuming the water supply is steady, and the depth is controlled to have only one peak. 4 : The yield is increased by deep irrigation, referring to the yield-increasing technique of deep-irrigation method used by an outstanding farmer. The growth of rice plants were analyzed. As the result of stratified clip method, it became clear that the deep-irrigation method is put on the rice plant canopy 10 cm. Three years investigations indicated many available results, one of them is that controlled release coated fertilizer is effective in order to increase the yield.
|
