Emergent investigation on the cold-weather damage of paddy rice grown in 2003 from the viewpoint of crop science

从作物学角度探讨2003年水稻冷害情况

• 批准号: 15800012
• 负责人: IMAI Katsumi
• 金额: --
• 依托单位: MEIJI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Special Purposes
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15800012/
• 关键词: rice; crop science; stress; agricultural products; cold-weather damage; 農林水産学

The investigation on the actual conditions of the cold-weather damage of rice which arose in 2003 around the Pacific side of northern Japan and the observations of phenomena in rice under the abnormal weather were carried out to draw important points which should be clarified by the future research. At first, the weather data of Hokkaido, Aomori, Iwate and Miyagi prefecture where the cold-weather damage was severe were analyzed in relation to rice growth. Especially, the low temperature recovered from late July in 2003 caused the damage to be light compared with that in 1993 which caused severe damage in rice. Therefore, the cold-weather damage was not reduced by only the progressed cultivation technology and cultivars during the past 10 years, and it became clear that the progress of the countermeasure technology to the cold-weather damage was much more necessary from now on, too. From these results, it could evaluate the "late transplanting cultivation" which shifted the highly sensi … More tive stage to the low temperature of rice without middle to end of July. This was recommended in each prefecture in the Tohoku district. Furthermore, it was analyzed about the effects of the abnormal weather in 2003 on the cultivation of rice in Japan except for the Tohoku district. There was an example that the quality of the rice grain improved by lower temperature compared with that in average year in Hokuriku district. In Iwate and Miyagi prefecture, when the possibility of the cold-weather damage seemed to become reality, research on it was carried out in a hurry and its analysis was also included in the current research. The investigations carried out were as follows : (1)The analysis of the effects of low temperature in relation to the growth stage of rice and the position in the field, (2)The relationships between the number of pollinated pollen and the maturation of rice, (3)The relationships between the days from the extension of ear to the days of flowering and the days to the maturation of rice, (4)The structural analysis of the rice which didn't mature due to the low temperature. Furthermore, it became clear that the "deep flooding cultivation" was a promising technology which reduce the cold-weather damage of rice among the need of future research. Less

通过对2003年日本北方太平洋沿岸水稻冷害的实际情况进行调查，并对异常天气下水稻的现象进行观察，得出今后研究中应明确的要点。首先，分析了寒冷天气危害严重的北海道、青森、岩手县和宫城县的天气数据与水稻生长的关系。特别是2003年7月下旬恢复的低温，与1993年水稻严重受灾相比，危害较轻。因此，在过去10年中，仅仅依靠栽培技术和品种的进步并不能减少冷害，今后更需要冷害对策技术的进步。根据这些结果，可以对“晚栽”栽培进行评价， ...更多信息 水稻对低温的敏感期在7月中下旬。这是东北地区每个县的建议。此外，还分析了2003年异常天气对日本除东北地区以外的水稻种植的影响。在北陆地区，与常年相比，低温对稻米品质的改善有一定的作用。在岩手县和宫城县，当寒冷天气损害的可能性似乎成为现实，对它的研究进行了匆忙，它的分析也包括在目前的研究。进行的调查如下：（1）低温对水稻生育期和田间位置的影响分析，（2）授粉花粉数与水稻成熟的关系，（3）水稻抽穗至开花天数与水稻成熟天数的关系，（4）水稻抽穗至开花天数与水稻成熟天数的关系，（5）水稻抽穗至开花天数与水稻成熟天数的关系。（4）低温不成熟稻米的结构分析。此外，“深淹栽培”是一项很有前途的减少水稻冷害的技术，值得进一步研究。少

项目成果

M.Saito, S.Nakamura, Y.Goto: "Relationship between Heading Date and Percentage Sterility of Rice Plant …On Rice Cultivation in Miyagi Prefecture…"Japanese Journal of Crop Science. Vol.73, Extra issue 1. 250-251 (2004)

M.Saito、S.Nakamura、Y.Goto：“水稻抽穗日期与不育率之间的关系……关于宫城县的水稻种植……”《日本作物科学杂志》第 73 卷，特刊 1. 250-251（ 2004）

斎藤満保, 中村 聡, 後藤雄佐: "平成15年度の冷夏における出穂日と不稔歩合との関係--宮城県での稲作において--"日本作物学会紀事. 73・別1. 250-251 (2004)

Mitsuo Saito、Satoshi Nakamura、Yusa Goto：“2003 年凉爽夏季抽穗日期与不育率之间的关系——宫城县的水稻种植——”日本作物学会杂志第 73 期，第 1 部分。250-。 251（2004）

斉藤満保, 中村 聡, 後藤雄佐: "平成15年度の冷夏における出穂日と不稔歩合との関係-宮城県での稲作において-"日本作物学会紀事. 73. 250-251 (2004)

Mitsuho Saito、Satoshi Nakamura、Yusa Goto：“2003 年凉爽夏季抽穗日期与不育率之间的关系 - 宫城县的水稻种植 -”日本作物学会杂志 73. 250-251 (2004)。