摘要
为了解区域气候要素对水稻产量的影响,通过长期(1990-2005年)定位稻田试验结果,对湖南省桃源县早、晚稻气候产量与气候要素的关系进行了解析。结果表明,早稻气候产量与抽穗-成熟期≥10℃的有效积温之间呈显著的正相关关系,而生育期日照时数的波动和日均最低气温的改变是导致晚稻气候产量年际大幅波动的主要原因。针对当地产量与气候的响应关系,提出了相应的水稻栽种应对措施。
Based on the data of an in situ long-term paddy field experiment from 1995 to 2005 in Taoyuan County, Hunan Province, the relationship between early and late rice yields and meteorological factors were analyzed to understand the impacts of regional climatic factors on rice yields in the double-cropped rice production. The results showed that the climatic yields of early rice were positively correlated to the effective accumulative temperature above 10℃ from the heading to maturing period. However, the fluctuation of sunshine duration and variation of average daily minimum temperature during the growing period were the main causes for the great inter-annual undulation of the climatic yield of late rice. Based on the research results, corresponding cultivation measures were put forward.
出处
《中国农业气象》
CSCD
2008年第4期450-453,共4页
Chinese Journal of Agrometeorology
基金
国家重点基础研究发展计划“我国农田生态系统重要过程与调控对策研究”(2005CB121106)
中国科学院知识创新工程重要方向项目“稻田生态系统持续生产力与生态功能协调机制研究”(KZCX2-YW-423)
关键词
双季稻
气候产量
气象因子
Double-cropped rice
Climatic yield
Meteorological factors
