夜间温度升高对早稻生长发育及产量的影响  

Effects of Night Temperature Increase on Growth and Yield of Early Season Rice

作　　者：魏金连[1] 潘晓华[1] 

机构地区：[1]江西农业大学农学院,江西省作物生理生态与遗传育种重点实验室,江西南昌330045

出　　处：《江西农业大学学报》2008年第3期427-432,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家科技支撑计划“长江中游南部(江西)双季稻丰产高效技术集成研究与示范”(2006BAD02A04)资助

摘　　要：利用两间玻璃室内夜间不同的温度条件,研究了全生育期夜间温度对早稻生长发育及产量的影响。与夜间常温对照相比,夜间高温处理明显加快早稻的秧苗出叶速率,显著提高秧苗素质;有利于分蘖的发生和生长,提高有效穗数。但夜间高温处理明显缩短了早稻的始穗期和剑叶叶绿素缓降期,减少颖花分化,结实率下降,产量降低。Under using the different night temperature conditions in two glasshouses,the experiment was conducted to study the effects of night temperature on growth and yield of early-season rice during the whole growth period.The results showed that： high night temperature can accelerate leaf appearance of early-season rice seedlings obviously,and improve the quality of seedlings significantly,accelerate tillering and enhance the effective panicles.However,compared with the natural night temperature treatment,the days from transplanting to heading and the relatively steady phase of chlorophyll of the flag leaves were shortened significantly by high night temperature,the number of spikelets differentiation and filled grain percentage,as well as grain yield were decreased obviously.

关 键 词：早稻 夜间温度 出叶 分蘖 叶绿素含量 颖花分化 产量构成 

分 类 号：S511.01[农业科学—作物学]