学会誌「自然災害科学」

青森県における1993年夏季の気象的特徴と水稲冷害の実態

Cool Summer Damage of Rice and Meteorological Analysis at Aomori Prefecture in Summer of 1993

山本 晴彦*・鈴木 義則**・執行 盛之***・早川 誠而*

Haruhiko YAMAMOTO*, Yoshinori SUZUKI**, Moriyuki SHIGYO*** and Seiji HAYAKAWA*

Abstract

Cool summer damage of rice was caused by cool summer of 1993 in the northern part of Japan. At Mutsu City in Aomori Prefecture, monthly mean temperature in July and August were 16.4C and 19.1C respectively, which were 3.1, 2.6 lower than monthly normals. Sunshine hours at Mutsu City was 65-67% of normals. Mean rice yield of Aomori Prefecture was 159 kg/10a, yield index was 28. In particular, rice yield was zero at Shimokita and Kamikita agricultural regions faced the Pacific Coast by Yamase bring unusual temperature. But the rice yield at Tsugaru region faced the Sea of Japan was comparatively high yield. The rice damage by cool summer of 1993 exceeded 77.2 billion yen in Aomori Prefecture.

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