摘要
用国稻6号和武运粳7号2个水稻品种进行水稻全生育期白天增温、夜间增温和全天增温试验,并于水稻灌浆初期进行光合作用参数日变化测定。结果表明:上午10∶00 2个水稻品种光合速率和气孔导度均表现为全天增温处理的最高,其次为对照,再次为白天增温处理的,最低为夜间增温处理的。各处理间差异极显著(P<0.01);武运粳7号中午12∶00前后出现了光合"午休"现象。
Experiments on warming the canopy of rice with rice varieties Guodao 6 and Wuyujing 7 were performed, and determination of photosynthesis parameter were carried out at the initial stage of filling. The results showed that the photosynthesis rate and stomatal conductance of the experiment of all-day warming was the highest, the control group was the second, the daytime warming was the third and the night-time warming was the last at 10：00 a. m. Analysis of variance revealed significant difference among treatments（ P 〈 0. 01 ）. Photosynthetic midday-depress occurred in Wuyujing 7 at about 12： 00.
出处
《江苏农业学报》
CSCD
北大核心
2008年第3期237-240,共4页
Jiangsu Journal of Agricultural Sciences
基金
国家科技支撑计划项目(2006BAD04B04)
国家“973”预研项目(2006CB708410)
关键词
白天增温
夜间增温
光合速率
气孔导度
day-time warming
nlght-time warming
photosynthetic rate
stomatal conductance
