在日本东北地区南部太平洋沿岸地区(宫城县),水渍稻田传统的水稻移栽日期为五月十日左右。据认为,在此日期之前移栽,气温不够高,不足以支持水稻生长,因此是困难的,水稻甚至会受害。但该地区太阳辐射强度的峰值时期之一是春季。本文的工作目的在于:通过提早水稻移裁日期,充分利用该地区春季丰富的辐射能,来提高水 In the southern Pacific Rim (Miyagi Prefecture) in northeastern Japan, the transplanting date for paddy rice paddies is about May 10. It is thought that transplanting before this date is not enough to support the growth of rice and therefore it is difficult and the rice will even suffer. However, one of the peak periods of solar radiation intensity in the area is spring. The purpose of this paper is to increase water use by early rice removal date and full use of abundant spring radiation in the area