THE EFFECTS OF RISING TEMPERATURES ON PHENOLOGY AND PRODUCTIVITY OF RICE CROP IN CHINA- A REVIEW STUDY | ||
| Zagazig Journal of Agricultural Research | ||
| Volume 52, Issue 5, September and October 2025, Pages 987-998 PDF (1.13 M) | ||
| Document Type: Review Article | ||
| DOI: 10.21608/zjar.2025.465665 | ||
| Authors | ||
| Heba Abdel-Muola* 1; I.M. Abdel-Hamid2; Inas S. El Bendary3 | ||
| 11. Nat. and Environ. Res. Dept., Fac. Asian Postgraduate Studies, Zagazig Univ., Egypt | ||
| 2Nat. and Environ. Res. Dept., Fac. Asian Postgraduate Studies, Zagazig Univ., Egypt | ||
| 3Geography Dept., Fac. Arts, Zagazig Univ., Egypt | ||
| Abstract | ||
| This review study explores the effects of rising temperatures on rice phenology and productivity in China-an issue of growing concern amid accelerating climate change. As one of the world's most essential staple crops, rice is particularly sensitive to temperature fluctuations, especially in regions where optimal growing conditions are being disrupted by warming trends. The primary aim of this review is to synthesize existing knowledge on how increasing temperatures influence the various developmental stages of rice-germination, tillering, flowering, and maturity and their cumulative impact on yield. Drawing on research conducted between 2015 and 2025, the paper highlights a clear correlation between elevated temperatures and shifts in rice phenology. Higher temperatures have been shown to speed up plant growth, shorten the vegetative stages, and trigger earlier flowering. However, heat stress during critical phases especially flowering and grain filling stages has a detrimental effect on yields. This impact is most pronounced in China’s southern and eastern regions, where temperature increases are occurring more rapidly than in the north. The review also examines adaptation strategies aimed at mitigating these adverse effects. These include the development of heat-tolerant rice varieties, adjustments in sowing dates, improvements in irrigation infrastructure, and enhanced pest management practices. Despite progress, significant challenges remain, particularly in vulnerable areas where farmers have limited adaptive capacity. Furthermore, the study underscores the need for more region-specific and integrated research to better understand how temperature interacts with other environmental variables such as soil moisture, atmospheric CO₂ levels, and extreme weather events. These factors may compound the negative effects of heat on rice yield. In conclusion, while rising temperatures pose a serious threat to rice cultivation in China, science-based adaptation strategies supported by continued research and cooperative policymaking offer a viable pathway to sustaining rice production in the face of climate change. | ||
| Keywords | ||
| : Rice yield; global warming; China; heat stress; rice phenology; climate change | ||
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