ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Crop and Product Physiology
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1630992
This article is part of the Research TopicPhysiology and Production of Cash Crops: Seeking Ways to Increasing Productivity and Stabilizing YieldView all articles
Yield formation at different nodes in the ratoon season of " forage-grain ratoon rice" under cutting time and stubble height
Provisionally accepted
Pan Pan Gai1
Wei Yuan Chen2Xin Sun1Jing Hong Chen1Sheng De Yang1Fei Mao Ren1Lei Liu1Qin Wei Wang1Bin Hua Zheng1Yuan Qi Tang1*- 1School of Agronomy, Hunan Agricultural University, Changsha, China
- 2Crop Research Institute, Hunan Academy of Agricultural Sciences, School of Agronomy, Hunan Agricultural University, Changsha, China
Select one of your emails
You have multiple emails registered with Frontiers:
Notify me on publication
Please enter your email address:
If you already have an account, please login
You don't have a Frontiers account ? You can register here
Based on 'forage-grain ratoon rice', the planting pattern of high grain yield of ratoon crop (RC), supplemented by fodder, can be regulated by cutting time and stubble height. In 2021 and 2022, using Xiangliangyou 900 as the experimental material, field trials were conducted to investigate the differences in yield formation of regenerated tillers from different nodal positions under varying cutting times (10 d and 30 d after heading) and stubble heights (10 cm and 30 cm). The results showed that,the average grain yield of T10 was 80.48% higher than that of T30, while the average grain yield of H30 was 21.77% higher than that of H10. Analysis revealed that the higher yield of T10 was attributed to the panicle m -2 and grain filling, while the higher yield of H30 was attributed to the panicle m -2 . Analysis revealed that the panicle m -2 and grain filling of regenerated tillers at different nodes in T10 were higher than those in T30, while the yield performance of regenerated tillers at different nodes in H was more complex. Further analysis revealed that under the H30 treatment, grain yield generally followed the order D4 > D3 > D2, with D3 and D4 contributing approximately 84.80% of the total yield on average. In contrast, under the H10 treatment, D3 exhibited higher yield than D4, with D3 contributing approximately 58.05% of the total yield. Notably, the D3 yield under H10 was higher than that under H30, while D4 showed the opposite trend. Reasonable cutting time and stubble height are important ways to increase the yield of the ratoon season.
Keywords: grain yield, Ratoon rice, Stubble height, Cut time, Node position, Regenerated bud
Received: 19 May 2025; Accepted: 14 Jul 2025.
Copyright: © 2025 Gai, Chen, Sun, Chen, Yang, Ren, Liu, Wang, Zheng and Tang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Yuan Qi Tang, School of Agronomy, Hunan Agricultural University, Changsha, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.