【摘要】 水稻生产能力是影响水稻生产增长和可持续发展的关键.在耕地质量分级的基础上,对浙江省富阳市水稻生产能力进行评价,并通过抽样调查分等单元的可实现生产力和依据水田质量的地力指数建立可实现产能的核算模型,对区域水稻的生产能力和可实现的增长潜力进行分析.结果表明:研究区水田地力指数与水稻产量的关系密切,水稻产量随着地力指数的升高而提高;单季水稻种植制度下,全市水稻可实现产能1.70×105t,是单季水稻实际产能(1.04×105t)的1.6倍;2009年,单季水稻实际单产7676kg·hm-2,可实现单产8831kg·hm-2,单产增长潜力为15%,表明该市水稻生产能力存在很大的提升潜力.通过对各乡镇水稻生产能力、生产规模的比较优势和可提升潜力的分析,将该市水稻生产划分为重点提升区、优化建设区和发展保护区.更多还原

【Abstract】 Rice productivity is the key factor affecting rice production and its sustainable development.Based on the gradation of cultivated land quality at county-level,this paper evaluated the rice productivity in Fuyang County of Zhejiang Province,and,through selected sampling field investigation and according to the land productivity index of paddy field quality,a model for assessing rice achievable productivity was established,aimed to analyze the regional rice productivity and its achievable productivity.In the study area,there was a positive correlation between the land productivity index and rice yield.For single cropping rice,its achievable productivity was 1.70×105 t,being 1.6 times of its realistic productivity(1.04×105 t).In 2009,the realistic rice productivity per unit area was 7676 kg·hm-2,and the achievable productivity was 8831 kg·hm-2,with a production potentiality of +15%,a big potential of rice production capacity in the county.Through the analyses of rice productivity,relative superiority of rice production scale,and its growth potential index in the villages and towns,the rice production of Fuyang County was divided into three regions,i.e.,key enhancement region,optimization construction region,and development protection region.更多还原