Optimizing agricultural management practices to promote ratoon rice yield during ratoon crop: A comprehensive global meta-analysis

IF 5.6 1区农林科学 Q1 AGRONOMY

Field Crops Research Pub Date : 2025-04-28 DOI:10.1016/j.fcr.2025.109943

Shi-Wen Deng , Yousif Abdelrahman Yousif Abdellah , Hong-Yu Chen , Ping-Lei Gao , Mutaz Mohammed Abdallah , Muhammad Shoaib Rana , Fu-Qiang Yu , Qi-Gen Dai , Rui-Long Wang

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Abstract

Context or problem

Ratoon rice is recognized as a sustainable and efficient method for low-input rice production. Improving the yield of the ratoon crop (RC) was the key to ensuring high yields in the ratoon rice system. Agricultural management practices (AMPs) have the potential to enhance the yield of RC in ratoon rice systems.

Objective or research question

Despite this potential, few studies have comprehensively quantified the impact of AMPs on RC yield, particularly regarding the optimal conditions for their application.

Method

In this study, we extracted 67 individual experimental observations globally and conducted a comprehensive meta-analysis to assess the response of RC yield to various AMPs. These AMPs included mineral nitrogen fertilizer (MNF) practice, organic material (OM) practice, water-saving irrigation (WSI), spraying growth regulators/foliar fertilizers (GR/FF), and no-tillage (NT) practice.

Results

MNF practice increased the yield of RC by 43.86% and the harvest index by 4.00% compared to non-MNF. Similarly, WSI practice raised RC yield by 14.01% and improved the harvest index by 6.89% versus farmer irrigation. GR/FF practice also enhanced the yield of RC by 12.70% and the harvest index by 6.92% relative to non-GR/FF. OM practice boosted RC yield by 25.31% compared to non-OM, but did not significantly affect the harvest index. In contrast, NT practice showed no significant impact on either the yield or harvest index of RC when compared to conventional tillage. MNF has a stronger effect on increasing yield under the nitrogen (N) application rate > 200 kg ha^-1, MAP < 1200 mm, low SOC content, and advanced nitrogen application for promoting bud initiation. WSI had the best effect on enhanced yield when moderate water conservation, MAT > 18 °C, MAP > 1200 mm, and SOC content was moderate or high. GR/FF was particularly effective in increasing yield when the MAT <18 °C, the SOC content was moderate or high, the soil pH < 6, and the application was made before and after the heading stage. In addition, appropriate N rates of heading in the main crop and optimal planting density could maximize the yield-increasing potential of AMPs.

Conclusions

Compared to untreated conditions, MNF, WSI, and GR/FF applications could significantly boost yields and harvest index, while adjusting AMPs in conjunction with local environmental conditions could further improve RC yield.

Implications or significance

Findings could inform the development of sustainable strategies to enhance the yield of ratoon rice in future agricultural practices.

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优化农业管理实践以促进再生稻在再生作物期间的产量：一项全面的全球荟萃分析

栽培水稻被认为是一种可持续和高效的低投入水稻生产方法。提高再生作物的产量是保证再生水稻高产的关键。农业管理规范（AMPs）有可能提高再生稻系统中RC的产量。尽管有这种潜力，但很少有研究全面量化amp对RC产量的影响，特别是关于其应用的最佳条件。方法在本研究中，我们在全球范围内提取了67个单独的实验观察结果，并进行了全面的荟萃分析，以评估RC产量对各种amp的响应。这些AMPs包括无机氮肥（MNF）、有机材料（OM）、节水灌溉（WSI）、喷施生长调节剂/叶面肥（GR/FF）和免耕（NT）。结果与不施用氮肥相比，施用氮肥可使RC产量提高43.86%，收获指数提高4.00%。同样，与农民灌溉相比，WSI做法使RC产量提高了14.01%，收获指数提高了6.89%。与非GR/FF相比，GR/FF处理可使RC产量提高12.70%，收获指数提高6.92%。与未施用有机质相比，施用有机质使RC产量提高了25.31%，但对收获指数没有显著影响。相比之下，与传统耕作相比，NT耕作对RC的产量和收获指数均无显著影响。氮肥施用量下MNF增产效果较强；200 kg ha-1, MAP <；1200mm，土壤有机碳含量低，施氮量高，促进芽形成。水分保持适度时，WSI增产效果最好；18°C, MAP >；1200mm，有机碳含量中高。当温度为18°C，土壤有机碳含量适中或较高，土壤pH值为6、抽穗期前后分别申请。适当的主粮抽穗施氮量和适宜的种植密度可以最大限度地发挥AMPs的增产潜力。结论与未处理相比，施用MNF、WSI和GR/FF可显著提高RC产量和收获指数，同时结合当地环境条件调整amp可进一步提高RC产量。研究结果可为未来农业实践中提高冬稻产量的可持续策略的制定提供信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Field Crops Research 农林科学-农艺学

CiteScore

9.60

自引率

12.10%

发文量

307

审稿时长

46 days

期刊介绍： Field Crops Research is an international journal publishing scientific articles on: √ experimental and modelling research at field, farm and landscape levels on temperate and tropical crops and cropping systems, with a focus on crop ecology and physiology, agronomy, and plant genetics and breeding.