气候视角下"江汉大米"的生产优势、风险及对策OA

As a key provincial public brand cultivated by Hubei Province,"Jianghan Rice"shoulders the critical mission of driving the transformation of Hubei's rice industry from"scale-driven expansion"to"quality-oriented strengthening".Its core production region,the Jianghan Plain,has emerged as Hubei's premium rice-producing area,leveraging its unique climatic endowments of abundant temperature,sunlight,and water resources,as well as innovative practices in eco-integrated farming models such as rice-fish co-culture.Against the backdrop of global climate warming,the Jianghan Plain has become the most pronounced warming zone in Hubei over the past six decades.This warming trend yields dual impacts:on one hand,increased accumulated temperature extends the optimal growth period for rice,facilitating yield improvements and expanding the cultivable boundaries of medium-and late-maturing varieties northward and westward;on the other hand,the intensified frequency of extreme climate events—including torrential rains/floods,droughts,and heatwaves—poses severe threats to the stability of rice yields and quality.Through a systematic climate-centric analysis,this paper unveiled the climatic opportunities and risks confronting the development of the"Jianghan Rice"industry:(1)Adaptability disparities among rice varieties to"warm-humid"climate conditions,with certain varieties at risk of shortened growth durations and heightened pest/disease pressures;(2)The sensitivity of key quality-forming stages(grain-filling period)to high-temperature stress,directly impacting rice grain appearance quality and taste attributes;(3)The imperative for systemic reforms in cropping systems triggered by climate warming,which places traditional maturity-type and variety combinations under pressure for reconfiguration.To address these challenges,this paper proposed three strategic pathways:(1)Establishing a"Jianghan Rice"variety breeding and iteration system,prioritizing the development of new varieties with heat tolerance,lodging resistance,and consistent premium yields;(2)Optimizing the spatial layout of industry with climate adaptability by instituting a"variety-region-technology"matching mechanism grounded in climate zoning;(3)Innovating meteorological risk mitigation and insurance service models through the development of climate index insurance products covering the entire industrial chain,thereby constructing a closed-loop management system integrating"pre-disaster early warning,in-disaster response,and post-disaster compensation".