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《Journal of Jilin Agricultural Sciences》 2006-01
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Effect of Temperature and Sunlight on Yield and Quality of Rice in Cold Area

ZHANG Wen-xiang, WANG Cheng-ai, WANG Bo-lun, et al.(Tonghua Academy of Agricultural Science, Meihekou 135007, China)  
The effect of temperature and sunlight on yield and quality of rice in cold area was studied using 6 rice varieties on 3 climatic districts. The main results were as follows: The main factor which affects yield and quality of rice in cold area was temperature. Heading date was brought forward, yield increased and quality improved as the temperature rose. Sunlight effect on yield was less than that of temperature. Quality of rice was improved when sunlight amount during grain forming stage rose. The yield and yield components was obviously increased if the cumulative temperature from grain forming to ripen stage, especially during 21 to 50 days after heading increased. The effect of cumulative temperature and sunlight after heading, especially during 21 to 50 days after heading was more important than that before heading. High temperature was propitious to increase yield and quality, and more sunlight could improve quality of rice.
【Fund】: 国家863项目(2001AA241015);; 辽宁省自然科学基金资助项目(99101002)
【CateGory Index】: S511
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