江淮区域稻麦两熟制周年资源分配、利用特征  

Characteristics of resource allocation and utilization of rice-wheat double cropping system in the Jianghuai Area

作　　者：杜祥备 孔令聪[1] 习敏[2] 吴文革[2] 陈金华[3] 岳伟[3] DU Xiangbei;KONG Lingcong;XI Min;WU Wenge;CHEN Jinhua;YUE Wei(Crop Research Institute,Anhui Academy of Agricultural Sciences,Hefei 230031,China;Rice Research Institute,Anhui Academy of Agricultural Sciences,Hefei 230031,China;Anhui Meteorological Institute,Hefei 230031,China)

机构地区：[1]安徽省农业科学院作物研究所,合肥230031 [2]安徽省农业科学院水稻研究所,合肥230031 [3]安徽省气象科学研究所,合肥230031

出　　处：《中国生态农业学报（中英文）》2019年第7期1078-1087,共10页Chinese Journal of Eco-Agriculture

基　　金：国家重点研发计划项目(2017YFD0301306,2018YFD0300906)资助~~

摘　　要：江淮区域稻麦周年两熟种植模式自然资源分配与利用特征尚不明确,限制了该区作物周年高产高效协同发展。本研究通过对江淮区域不同地区多年多点水稻-小麦种植模式高产试验数据分析,明确两熟制季节间资源分配特征、资源利用效率及其与产量的关系。结果表明:2008—2017年小麦季和周年辐射均呈降低趋势,水稻季沿淮和江淮地区呈增加趋势,沿江地区呈降低趋势;小麦季积温呈增加趋势、水稻季大部分呈降低趋势,周年沿淮地区呈增加趋势,江淮和沿江地区呈降低趋势;降雨小麦季、水稻季和周年总体呈增加趋势。江淮地区周年辐射量从北向南逐渐减少,不同种植模式间无显著差异;小麦季、水稻季辐射分配率粳稻-小麦模式分别为53.1%、51.9%,籼稻-小麦模式分别为55.0%、49.8%。江淮地区从北向南累积积温和降雨量逐渐增加,不同种植模式间无显著差异;小麦季、水稻季积温分配率粳稻-小麦模式为38.5%、67.3%,籼稻-小麦模式为40.7%、65.1%;小麦季、水稻季降雨分配率在2种模式间无显著差异,而不同地区间差异显著,沿淮地区为32.8%、70.5%,江淮地区为40.8%、64.7%,沿江地区为46.2%、57.2%。当前生产模式下,江淮区域稻麦两熟种植模式以水稻产量所占比重最高,平均为57.0%。小麦季积温生产效率沿淮地区显著高于江淮地区和沿江地区,不同种植模式间差异较小;水稻季积温生产效率不同地区不同模式间差异较小;周年积温生产效率不同地区间差异显著,且沿淮地区>江淮地区>沿江地区,不同种植模式间差异不显著。区域间作物光能生产效率差异较小,小麦季、水稻季和周年均无显著差异。不同地区降雨生产效率变异较大,小麦季、水稻季和周年均以沿淮地区大于江淮地区,显著高于沿江地区;不同种植模式间无显著差异。因此,江淮区域稻麦周年两熟资源高效利用原则应以合�Rice-wheat double cropping system is the main cropping pattern in the Jianghuai Area. The characteristics of natural resource allocation and utilization and their relationship with yield are still unclear. It is necessary to establish a quantitative evaluation index system for the systematic guidance of the double cropping system. In this study, resources distribution between two seasons, resources utilization efficiencies, and yield of rice-wheat double cropping system in three regions of the Jianghuai Area: along Huaihe River region (AHR), Jianghuai region (JH), and along Yangtze River region (AYR), were quantitatively analyzed using the large database created from high yield field experiments during 2008-2017. The results were as follows: radiation during wheat season and per year decreased in the region, while in the rice season radiation increased in AHR and JH but decreased in AYR. The accumulated temperature increased in wheat season and decreased in rice season, and the annual accumulated temperature increased in AHR and decreased in JH and AYR. Precipitation during wheat season, rice season, and per year increased. The annual radiation in the Jianghuai area increased from the north to the south with no significant difference between japonica rice-wheat system and indica rice-wheat system. The radiation distribution rate of wheat season and rice season were 53.1% and 51.9%, respectively, for the japonica rice-wheat double cropping system, and 55.0% and 49.8%, respectively, for the indica rice-wheat double cropping system. The cumulative accumulated temperature and precipitation gradually increased from the north to the south of Jianghuai area, with no significant difference between two systems, but there were significant differences between different regions. The distribution rate of accumulated temperature in wheat and rice season were 38.5% and 67.3%, respectively, for the japonica rice-wheat, and were 40.7%, 65.1%, respectively for the indica rice-wheat double cropping system. The accumulated precipita

关 键 词：江淮区域 稻麦周年两熟 种植模式 资源配置特征 分配率 资源利用效率 

分 类 号：S162.3[农业科学—农业气象学]