|Title:||氣象對臺灣一、二期稻作農藝性狀影響之研究||Other Titles:||Influence of Climate on the Yield and Agronomic Characters of the First and Second Crap Rices in Taiwan||Authors:||劉清
|Issue Date:||Dec-1984||Publisher:||臺灣省農業試驗所||Related Publication(s):||農業試驗所特刊第16號||Start page/Pages:||59-72||Source:||稻作區域性與期作性低產及增產措施之研究||Abstract:||
A total of 22 sets of data including 7regions and 5varieties from Long-term regional trials were used to study the influence of climatic factors on the agronomic charac ters of rice. Climatic factors considered were the mean air temperature and the mean sun-shine hours 45 days before and 30 days after heading respectively. Agronomic char acters studied were the days of growing (days from transplanting to heading). days of matur-ing (days from heading to maturin), plant height, number of panicles and the yield.
Results from factor analysis revealed that the pattern and the magitude of the climatic influence on the agrono mic characters (1st crop, 2nd crop or inter-crop difference) differ quite a lot from region to region and from variety to variety. The different response to climatic change due to the genetic mechanism of the varieties themselves is not the only cause attributed to thus phenomenon, there are also exidences indicating the existence of the genetic-environment interaction.
Results from canonical correlation analysis showed that Taichung and Pintong have the highest association between the 4 climatic factors and 5 agrono mic characters. As for the variety, Tainan 5 is the most prominent one.
Utilization of temperature and solar rediation to improve the rice yield is suggested and briefly discussed.
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