多年生水稻"一种两收"模式在湖北省的发展状况、潜在约束与推进路径OA

To promote the application of perennial rice with the"one planting,two harvests"model in Hubei Province,the current sta-tus and performance of perennial rice in terms of introduction trials,demonstration,and extension within the region were reviewed.Preliminary results indicated that the total yield of two harvests of perennial rice exceeded 12 000 kg/hm2,approaching the yield lev-els of locally promoted double-cropping rice or the"single-cropping mid-season rice+ratooning rice"system.The key constraints hindering the adoption of this model in Hubei were analyzed,including limitations in varietal adaptability,immature key cultivation techniques,uncertainties in economic benefits and market acceptance,and deficiencies in policy and industrial support systems.In re-sponse,and taking into account Hubei's diverse climate and ecological conditions,the promotion pathways of the"one planting,two harvests"model of perennial rice were proposed,including implementing a zoning and classified development strategy,strengthening scientific research and integrated innovation,building a full-industry-chain support system,and improving policy safeguards and ser-vice mechanisms,so as to provide support for ensuring food security and promoting the transition toward green and low-carbon agricul-ture.