降雨の変動特性と稲作生産 : 東北タイにおける天水田稲作の実態と生産構造(1)

概要

論文の詳細を見る
The rain-fed rice production of Don Daeng village in Northeast Thailand is extremely unstable. Compared with an exceptionally bumper harvest in 1983, annual rice production during a nine-year period (1978-1986) was 4-65 percent of the 1983 total. There were only 4 percent in 1978 and 1980 due to heavy flood-ing, and also 10, 18 and 17 percent in 1979, 1982 and 1986 due to drought respectively. The relationship between rice production and variability of rainfall was anlyzed in this paper. It was found that the instability of rice production depends highly upon the unpredictable onset of the monsoon season and temporal distribution of rainfall and dry-spell in the rainy season. Finally, some methods of water management under the extreme instability of rain-fed paddy field were discussed.
信州大学教養部の論文
1991-03-15