Effect of an unforeseeable torrential downpour called guerrilla gouu on the growth of the rice plants.

一场名为“游击沟”的不可预见的倾盆大雨对水稻生长的影响。

• 批准号: 23580025
• 负责人: OHE Masamichi
• 金额: $ 3.33万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23580025/
• 关键词: flood; submergence; rice; yield; tiller; heavy rain; disaster; 冠水; 豪雨; 水稲; 収量; イネ; 水温; 冠水時期; 冠水期間; 洪水; ゲリラ豪雨

To clarify influence of the flood caused by the torrential rain on rice growth, we set 1, 2, 4 and 8 days submergence treatments in the major growth stages of rice. Effects of submergence on growth at the early growth stage (tillering stage) of rice became small with growth, and the negative effect on yield was small. On the other hand, submergence more than 2 days of the grain differentiate, the pollen forming and grain filling stages decreased the yield. Yield reduction was caused by the degeneration of the weak spikelet. In 8 days treatment of the late growth stage (panicle formation stage), high node tillers which does not appear in the normal cultivation conditions were observed. Apparent stem number greatly increased, but these stems did not grow up to panicles. Emergence of such tillers made center of gravity high, and changed the rice posture into the posture that was easy to lodge. The higher the flood water temperature, the damage caused by flood became remarkable.

为了明确暴雨引起的洪水对水稻生长的影响，我们在水稻主要生育期分别设置了1、2、4和8 d的淹水处理。淹水对水稻生长早期（分蘖期）生长的影响随生长而减小，对产量的负面影响较小。另一方面，淹没超过2 d的籽粒分化、花粉形成和籽粒灌浆阶段均降低了产量。弱穗的退化是导致产量下降的主要原因。在生育后期（穗形成期）处理8 d，观察到正常栽培条件下未出现的高节分蘖现象。表观茎数显著增加，但未发育成穗。这种分蘖的出现使水稻的重心增高，使水稻的姿态变为易于倒伏的姿态。洪水水温越高，洪水造成的破坏越显著。

项目成果

短期間の冠水の時期および期間が日本型水稲の分げつ 生育と倒伏抵抗性および収量に及ぼす影響

短淹期和持续时间对日本型水稻分蘖生长、抗倒伏和产量的影响

• 发表时间: 2013
• 作者: Hatakeyama;Y.;A. Nose;and O. Ueno;西田龍太郎,平井儀彦,津田誠;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博・上野修;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;保田謙太郎;大江真道・坂東彩希;松尾洋明・大江真道;中山祐一郎;大江真道・坂東彩希
• 通讯作者: 大江真道・坂東彩希

イネの深水栽培

水稻深水栽培

• 发表时间: 2012
• 作者: 松尾洋明;大江真道;田中孝・中山祐一郎・保田謙太郎・植村修二;大江真道
• 通讯作者: 大江真道

幼穂発達期における短期間の冠水が水稲の収量構成要素に及ぼす影響

穗期短期淹水对水稻产量构成的影响

• 发表时间: 2012
• 期刊: 日作紀
• 作者: Hatakeyama;Y.;A. Nose;and O. Ueno;西田龍太郎,平井儀彦,津田誠;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博・上野修;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;保田謙太郎;大江真道・坂東彩希;松尾洋明・大江真道
• 通讯作者: 松尾洋明・大江真道

短期間の冠水の時期および期間が日本型水稲の分げつ生育と倒伏抵抗性および収量に及ぼす影響

短期淹水期和淹水期对日本型水稻分蘖生长、抗倒伏和产量的影响

• 发表时间: 2013
• 期刊: 日作紀
• 作者: Hatakeyama;Y.;A. Nose;and O. Ueno;西田龍太郎,平井儀彦,津田誠;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博・上野修;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;畠山友翔・野瀬昭博;保田謙太郎;大江真道・坂東彩希
• 通讯作者: 大江真道・坂東彩希