• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Mechanism of high yield and high water productivity cultivation method for ratooning rice and its effect on reducing environmental impact

Research Project

Project/Area Number 20K20456
Project/Area Number (Other) 19H05541 (2019)
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund (2020)
Single-year Grants (2019)
Review Section Medium-sized Section 41:Agricultural economics and rural sociology, agricultural engineering, and related fields
Research InstitutionJapan International Research Center for Agricultural Sciences

Principal Investigator

Shiraki Shutaro  国立研究開発法人国際農林水産業研究センター, 農村開発領域, 主任研究員 (90837501)

Co-Investigator(Kenkyū-buntansha) 山岡 和純  国立研究開発法人国際農林水産業研究センター, 企画連携部, 再雇用職員 (70463883)
溝口 勝  東京大学, 大学院農学生命科学研究科(農学部), 教授 (00181917)
木村 匡臣  近畿大学, 農学部, 准教授 (80725664)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥26,000,000 (Direct Cost: ¥20,000,000、Indirect Cost: ¥6,000,000)
Fiscal Year 2022: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords水稲再生栽培 / 生育モニタリング / 栄養塩類 / 再生イネ栽培 / 水生産性 / 環境負荷低減
Outline of Research at the Start

近年、インドネシア国西スマトラ州で開発された新たな再生イネ栽培法(現地名SALIBU Teknologi)(以下、「熱帯多年生イネ栽培法」)は、従来の再生イネ栽培法(刈取り後のイネの株から生える若芽を栽培する農法)の収量概念を覆し、一期作と同レベルの収量を維持しつつ、二期作目以降数世代にわたり連続的に栽培して収穫を繰り返すことが実証されている。本研究では、慣行移植・再生イネ栽培法との比較栽培試験を行い、熱帯多年生イネ栽培法が、高収量を低資源(水、土地、労働力等)投入量により達成する一連のメカニズムを解明するとともに、同栽培法による環境負荷低減効果と環境保全面を評価する。

Outline of Final Research Achievements

Results from the cultivation trials found that soil drying during the harvest period of the main crop increased the grain yield of ratoon crop by over 50%. This indicates that water management before and after the main crop's harvest is crucial for improving the yield of ratoon crop. Additionally, our study revealed that the water consumption features of ratoon crop differ from those of the main crop, influenced by the vigorous tillering of the ratoon crop. Therefore, irrigation planning for the ratoon rice cropping needs to consider these differences in water consumption features. Our analysis showed that the number of panicles in ratoon crop increased by 19% compared to the main rice crop, while the growth period was shortened by 41%, and the number of spikelets per panicle and grain yield decreased by 48% and 56%, respectively. Our study also showed that the ratoon crop has a yield component dependent on the number of panicles.

Academic Significance and Societal Importance of the Research Achievements

本研究では、低収量を引き起こすイネの再生特性を明らかにし、その特性に応じた栽培技術や水管理に関する新たな知見を提供した。これにより、農学分野における再生イネ研究の関心が高まり、新たな栽培技術の開発が促進されることが期待される。また、低投入型の再生イネ栽培技術が向上し普及することで、持続可能な農業の推進と食料安全保障の向上に寄与する。特に、途上国における農業生産の効率化と環境負荷の低減に貢献することが期待される。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Annual Research Report
  • Research Products

    (20 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (9 results) Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results) Remarks (2 results) Funded Workshop (1 results)

  • [Int'l Joint Research] 農業研究局(ミャンマー)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] クーロンデルタ稲研究所/フエ農林大学(ベトナム)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ボゴール農科大学(インドネシア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 農業研究局(ミャンマー)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] クーロンデルタ稲研究所/フエ農林大学(ベトナム)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] 農業研究局(ミャンマー)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] クーロンデルタ稲研究所(ベトナム)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] 農業研究局(ミャンマー)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] 農業研究局(ミャンマー)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] The general ratooning ability of rice yield-related traits: a meta-analysis2024

    • Author(s)
      白木秀太郎・Kywae・Thura・Lae Lae Mon・Thin Mar Cho・Kyaw Myaing・Nwe Ni・May That Oo・Loon Poe Poe・Aung kyaw Thu
    • Journal Title

      Agronomy Journal

      Volume: 116 Issue: 2 Pages: 504-519

    • DOI

      10.1002/agj2.21521

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evapotranspiration and Crop Coefficient of Ratoon Rice Crop Determined by Water Depth Observation and Bayesian Inference2021

    • Author(s)
      Shiraki Shutaro・Cho Thin Mar・Matsuno Yutaka・Shinogi Yoshiyuki
    • Journal Title

      Agronomy

      Volume: 11 Issue: 8 Pages: 1573-1573

    • DOI

      10.3390/agronomy11081573

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of the Double-Cutting Method for Ratooning Rice in the SALIBU system under Different Soil Moisture Conditions on Grain Yield and Regeneration Rate2020

    • Author(s)
      Shutaro Shiraki, Thin Mar Cho, Khin Mar Htay, Kazumi Yamaoka
    • Journal Title

      Agronomy

      Volume: 10 Issue: 11 Pages: 1621-1621

    • DOI

      10.3390/agronomy10111621

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Cultivating perennial rice for climate adaptation: Temperature effects and yield benefits in Myanmar2023

    • Author(s)
      白木秀太郎・Kyawe・New Ni・Aung Kyaw Thu
    • Organizer
      The 2023 Conference of International Society of Paddy and Water Environment Engineering
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多年生稲の収量関連形質の再生長特性:メタ分析2023

    • Author(s)
      白木秀太郎・Thin Mar Cho・Kyaw Myaing・Aung Kyaw Thu.
    • Organizer
      日本作物学会第255回講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 再生稲(ひこばえ)栽培による節水型水稲作付け体系の構築に向けて2021

    • Author(s)
      白木秀太郎・Thin Mar Cho・Aung Kyaw Thu
    • Organizer
      農業農村工学会大会講演会(第70回)
    • Related Report
      2021 Research-status Report
  • [Presentation] SRIにおける稲倒伏耐性に関する研究2021

    • Author(s)
      Yi Zhengming・溝口勝・杉野弘明
    • Organizer
      土壌物理学会
    • Related Report
      2021 Research-status Report
  • [Presentation] ミャンマー国におけるSalibu栽培法による再生イネの収量評価2020

    • Author(s)
      白木秀太郎、チョウミャン、テンマンチョウ、山岡和純
    • Organizer
      日本作物学会第249回講演会
    • Related Report
      2019 Annual Research Report
  • [Remarks] 再生稲の水分消費は、移植稲と比較して生育初期で大きく生育後期で小さい

    • URL

      https://www.jircas.go.jp/ja/publication/research_results/2021_a02

    • Related Report
      2022 Research-status Report
  • [Remarks] 水稲再生作では前作稲収穫前後の土壌乾燥が再生稲の収量性を高める

    • URL

      https://www.jircas.go.jp/ja/publication/research_results/2020_a04

    • Related Report
      2021 Research-status Report
  • [Funded Workshop] ミャンマー農業研究局再生稲研究ワークショップ(JIRCAS-DAR Workshop for Ratoon Rice Research)2022

    • Related Report
      2022 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi