杂交中籼稻生殖期间气象要素与结实率的相关性分析  

Correlation Analysis of the Seed Setting Rates of Hybrid Midseason Rice with Meteorological Elements during Grain Reproduction Stage

作　　者：曹国长[1] 余华强[1] 董新国[2] 田永宏[1] 赵开斌[1] 房振兵[1] 陈波[1] 范兵[1] 

机构地区：[1]湖北省襄樊市农业科学院,湖北襄樊441021 [2]湖北省种子管理站,武汉430070

出　　处：《湖北农业科学》2009年第11期2660-2662,共3页Hubei Agricultural Sciences

基　　金：湖北省农业科技创新中心资助项目(2007-620-001-03)

摘　　要：以1992～2004年湖北省中稻区域试验及武汉、荆州、襄樊气象站的资料为依据,分析了杂交中籼稻生殖期间各种气象要素与年度间结实率变化的相关性。结果表明,各种气象要素对水稻年度间结实率变化都有不同程度的相关性,其相关程度依次为7～9月份累计日照时数、7～8月份日平均地温和7～9月份日平均昼夜温差;7～9月份累计日照时数与结实率的相关系数为0.715 8,达极显著水平;7～9月份的累计日照时数x6对结实率y有最大的直接正效应(x6→x6→y=1.617 3)。Correlation analysis of the annual seed setting rates of hybrid midseason rice with many meteorological elements was conducted based on 1992-2004 midseason rice regional trials and meteorological data from weather stations of Jingzhou, Wuhan and Xiangfan cities. The results showed that all of the meteorological elements had different correlations with the rice setting rate, and three most important elements were the total sunshine hours, the average soil temperature and day/night temperature regimes from July to September;the correlation coefficient between the total sunshine hours from July to September and the setting rate was very significant （0.715 8）; The total sunshine hours from July to September （x6） had the strongest positive effect on the setting percentage （y）（x6→x6→y=1.617 3）.

关 键 词：杂交中籼稻 结实率 气象要素 日照时数 昼夜温差 

分 类 号：S511.32[农业科学—作物学] S162.5