|Title:||水積葉稻熱病預測(III)氣象變數與病斑面積率之關係||Other Titles:||Prediction of Rice Leaf Blast. III. Meteorological Variables and Percentage of Leaf Area Infected by Pyricularia oryzae||Authors:||蔡武雄
|Keywords:||稻熱病;預測;病斑面積率;轉角;rice blast;prediction;percentage of leaf area infected;arcsin percentage transformation||Issue Date:||Mar-1986||Publisher:||植病保護學會||Journal Volume:||28||Journal Issue:||1||Start page/Pages:||111-117||Source:||植物保護學會會刊||Abstract:||
By using multiple regression to analyze the relationships between meteorological variables and percentage of leaf area infected by Pyricularia oryzae on rice cultivar, Tainung 67, six reliable predicting equations were derived. The equations derived from 1979-1984 were tested in 1985. The results shoved that the predicting values were close to the observed values.
The predicting equations were obtained by using percentage of diseased leaf area with and without arcsin transformation. Equations derived from transformed and untransformed data were similar. The equations contained 3-4 meteorological variables, such as average RH, hours of RH over 90%, rainfall and rainy days. The coefficients of determination of the equations were 0.89-0.96. Among the six equations, four were derived from the meteorological variables of middle February, and the other two were derived from late February.
|Appears in Collections:||植物保護系|
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