一.冷害的背景水稻冷害,自古以来是日本稻作中的重要问题。如今,虽然农业技术发展了,冷害减产不象昔日那样严重,但是不仅在北日本,而且在西南日本和热带也还在发生冷害。 1.日本的冷害日本人把大米当做主食吃,所以把热带原产的水稻一直拿进温带北限的北日本,并当做主作物来种植。这样,选择农作物不是依着气候适应性,而是依着吃食习惯。日本水稻 I. Background of chilling injury Chilling damage to rice has been an important issue in Japanese rice cultivation since ancient times. Today, while agricultural technologies are developing, the reduction in chilling damage is not as severe as it was in the past, but it is still chilling not only in northern Japan, but also in southwestern Japan and the tropics. 1. Chill in Japan The Japanese use rice as their staple food, so they keep the tropical native rice in northern Japan with a temperate northern limit and grow it as a main crop. In this way, the choice of crop is not based on climate adaptability, but according to eating habits. Japanese rice