光温因子对玉米产量及产量构成因素值的影响  

Effects of light and temperature factors on yield and its components in maize.

作　　者：李言照[1] 东先旺[1] 刘光亮[1] 陶飞[1] 

机构地区：[1]莱阳农学院,莱阳265200

出　　处：《中国生态农业学报》2002年第2期86-89,共4页Chinese Journal of Eco-Agriculture

基　　金：山东省科委项目"生态因子与玉米产量的影响"部分研究内容

摘　　要：在山东省境内采用不同区域分期播种,系统分析自然条件下光温值的差异对玉米产量及产量构成因素值的影响及规律性结果表明,玉米生育期间的积温、日照时数与产量及产量构成因素值呈极显著正相关关系,积温的直接效应最大,日照通过积温的间接效应最大;开花～成熟阶段日照时数对穗粒数影响明显;日均温差与积温呈负相关关系并对千粒重和产量产生负效应;产量和千粒重以鲁西地区最高,且由鲁西地区向鲁东地区依次递减,穗粒数以鲁中地区最高;高产玉米全生育期需积温2500℃左右,日照时数为700h左右,开花～成熟阶段需积温1150℃左右,日照>300h。In Shandong Province,by sowing at different stages in different regions, the effect of the difference of light and temperature value under natural conditions on yield and its components was systematically analyzed in maize. The results show that the accumulated temperature and hours of sunshine during the growing period are significantly correlated with the yield and its components. The direct effect of the accumulated temperature is the greatest,the indirect effect of accumulated temperature by sunshine is also the greatest. From flowering to maturity, hours of sunshine affects the grain number per ear obviously. Average diurnal difference of temperature is negatively correlated with thousand-grain weight and yield. Yield and thousand-grain weight decrease from the west to the ease of Shandong Province and the grain number per ear is supreme in the middle of Shandong Province. Accumulated temperatures and sunshine times of high yielding maize during the growing period,and from flowering to maturity are 2500℃ or so and 1150℃ or so,and 700 hours or so,larger than 300 hours, respectively.

关 键 词：光温因子 玉米产量 产量构成因素值 影响 积温 日照 

分 类 号：S513[农业科学—作物学]