夜间温度升高对双季水稻秧苗素质的影响  

Effects of Nighttime Temperature Increases on the Seedling Quality of Double Season Rice

作　　者：魏金连[1] 潘晓华[1] 

机构地区：[1]农业部双季稻生理生态与栽培重点开放实验室,作物生理生态与遗传育种教育部重点实验室,江西农业大学,南昌330045

出　　处：《中国农学通报》2009年第14期134-137,共4页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金"夜温升高对双季水稻产量的影响及其生理机理研究"(30860138)

摘　　要：利用两间玻璃室内夜间不同的温度条件,研究了夜温升高对双季早晚稻秧苗素质的影响。结果表明,与夜间常温对照相比,夜温升高明显加快了早晚稻秧苗的出叶速率,提高干物质的积累量。但夜温升高降低晚稻秧苗的发根力,不利于秧苗的根系伸长。By using the different nighttime temperature in two glass-houses, the experiments were conducted to study the effects of nighttime temperature increases on the seedling quality of double season rice. The results showed that： nighttime temperature increases can accelerate leaf appearance of rice seedlings obviously, and increase dry matter accumulation. But the root growth ability （the root number x average root length） and root length were decreased by nighttime temperature increases.

关 键 词：双季水稻 夜温升高 秧苗素质 

分 类 号：S511[农业科学—作物学]