水稲幼植物の生育におよぼす高水温の効果について : とくに気温・日射量の変化との関連において

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タイトル別名
  • Effects of High Water Temperature on the Growth of Young Rice Plants in Relation to Temperature and Light Intensity Change
  • スイトウ ヨウショクブツ ノ セイイク ニオヨボス コウスイオン ノ コウカ ニツイテ トクニ キオン ニッシャリョウ ノ ヘンカ トノ カンレン ニオイテ

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説明

This experiment was carried out to confirm the relationship between the dry matter production of rice plants and water temperature, under various air temperature and light intensity conditions. The following results were obtained : 1. The rate of dry matter production was increased as the air temperature and light intensity increased, and high water temperature, 33℃, was more favorable temperature for dry matter production under any air temperature and light intensity condition in this experiment. 2. Water temperature was ascertained to have effectiveness on dry matter distribution. The rice plants grown under high water temperature had higher leaf blade distribution rate, higher specific leaf area (F/B), and larger leaf area. 3. Dry matter distribution was also affected by light intensity, but those gradients between 33℃ and 23℃ water temperature were kept under various light intensities.

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