Effects of high air temperature in summer of 1999 on ripening and grain quality of rice
Effects of high air temperature in summer of 1999 on ripening and grain quality of rice
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DOI：
10.1626/jcs.70.449
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发表时间：
2001-09-01
影响因子：
--
通讯作者：
Akita, S
中科院分区：
文献类型：
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作者：
Terashima, K;Saito, Y;Akita, S
虽然1999年的水稻产量不低于正常值，但1999年夏季的高气温损害了日本大面积地区稻米的外观品质。在东北和北陆地区，由于1999年早熟期的气温比正常气温高3-5 ℃，出现了白色粒、白色心和白背粒，检验等级为一级的稻米百分比显著下降。在九州地区，太阳辐射量低，气温高，这不仅影响了水稻产量，而且影响了稻米的外观品质和适口性。另一方面，耐高温新品种的推广和推广，以及在高气温条件下对水稻生长的适当管理，有助于减轻千叶县的损失。分析了1999年气象条件对水稻成熟和品质的影响，以及品种、栽培方式等因素对高温危害的影响。还将讨论作物科学的研究课题。
Although rice yield in 1999 was no less than the normal value, high air temperature during the 1999 summer season damaged the apparent quality of rice kernels in a large area of Japan. The percentage of rice kernels qualified as the first grade by inspection grade, was significantly decreased by the occurrence of milky-white kernels, white core and white-backed kernels in the Tohoku and Hokuriku area where the air temperature during the early ripening stage in 1999 was 3-5 degreesC higher than the normal air temperature. In the Kyushu area, low solar radiation with a high air temperature continued for a long term, and it affected not only the rice yield but also the apparent quality and palatability of rice kernels. On the other hand, the release and extension of new high temperature tolerant variety, as well as proper management for rice growth under a high air temperature condition, contributed to the reduction of the damage in Chiba prefecture. In this study, we analyzed the effects of weather conditions in 1999 on the ripening and quality of rice, and the factors such as variety and cultivation method relating to the damage by high air temperature. Research subjects in crop science will be also discussed.