中国水稻科学2016，Vol.30Issue(3)：323-334,12.DOI:10.16819/j.1001-7216.2016.5157
近30年江西双季稻安全生产期及温光资源变化
Changes in Safe Production Dates and Heat-light Resources of Double Cropping Rice in Jiangxi Province in Recent 30 Years
摘要
Abstract
Ascertaining the change rules of safe production dates and heat‐light resources of rice is an important basis for high use efficiency of heat‐light resources ,and high and stable production .In this study ,the daily mean temperatures and sunshine hours during the past 30 years (1984—2013) provided by 15 meteorological stations in different ecological regions in Jiangxi Province (Northern Jiangxi ,Central Jiangxi and Southern Jiangxi) were analyzed .According to the critical temperature indices for rice safe production dates , the change rules of safe production dates and heat‐light resources of double rice with 50% and 80% guarantee rates were provided .The results showed that the safe production dates and heat‐light resources changed obviously between the first 15 years (1984—1998 ) and the second 15 years (1999—2013) ,and there were certain differences among different regions .Compared with the first 15‐year period ,the safe sowing dates of early rice seedlings with film‐mulching in the second 15‐year period were ten‐day ahead of time (with the tendency of -4 .16 d 10a-1 ,the same as below ) ,and those of direct seedling shifted to four days earlier (-3 1.7 d 10a-1 );the safe transplanting dates were two‐day ahead of time(-2 2.1 d 10a-1 ) .For late rice ,the safe maturity dates were delayed by eight days (3 5.6 d 10a-1 ) ,while those of full heading delayed unobviously .The safe production season for the early rice with film‐mulching and direct seedling extended by eighteen (7 .72 d 10a-1 ) and eleven (6 .73 d 10a-1 ) days , respectively .During the safe production season , daily mean temperature increased obviously ,accumulated temperature added remarkably , and sunshine hours changed unobviously .Monitoring data showed that ,practical production dates were different from the safe production dates ,though the practical production dates were adjusted correspondingly in recent years .So the safe production dates under 80% guarantee rate over the past 30 years were obtained by each meteorological stations ,which can be referred in production arrangement ,planting patterns and varieties collocation for double rice in the regions nearby .Finally ,according to the trends of climate changes ,the possible adaptive strategies of agronomic measures were discussed .关键词
江西/双季稻/安全生产期/温光资源Key words
Jiangxi Province/double rice/safe production date/heat-light resources分类
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吕伟生,曾研华,曾勇军,石庆华,潘晓华,黄山,商庆银,谭雪明,李木英,胡水秀..近30年江西双季稻安全生产期及温光资源变化[J].中国水稻科学,2016,30(3):323-334,12.基金项目
国家科技支撑计划资助项目（2011BAD16B04）；公益性行业科研专项（201303102）；国家农业科技成果转化资金资助项目（2013GB2C500244）；江西省高等学校科技落地计划资助项目（KJLD12003）；江西省水稻产业体系专项（JXARS-02-03）；江西省研究生创新专项资金资助项目（YC2014-B034）；中国农业科学院水稻高效栽培技术创新团队项目。 （）
