葉稻熱病引起水稻產量損失估計
Other Title
Estimation of rice yield losses caused by leaf blast disease
Journal
中華農業研究
Journal Volume
37
Journal Issue
2
Pages
207-210
Date Issued
1988-06-10
Date
1988-06-10
Author(s)
蔡武雄
W.H. Tsai
Abstract
民國七十二年第一期作水稻品種臺農67號在葉稻熱病病斑面積率5、11、25、55及80％下，在嘉義分所之產量損失率分別為0.47、4.26、21.40、54.19及81.91％，在白河之產量損失率各為1.35、4.38、23.18、54.01及82.50％。臺南5號在不同病斑面積率下其產量損失率在嘉義分所為0.46、4.22、19.68、50.53及80.93％，在白河各為0.81、4.07、20.16、53.71及81.60％。民國七十六年第一期作在嘉義分所臺農67號在不同病斑面積率下其產量損失率各為0.32、3.42、19.08、46.98及79.40％，品種臺農70號分別為0.44、4.35、22.65、44.53及81.68％。民國七十二年第一期作產量損失率與病斑面積率之關係水稻品種臺農67號及臺南5號分別為Ŷ＝－5.89+1.09X及Ŷ＝－6.65+1.08X。民國七十六年第一期作臺農67號及臺農70號各為Ŷ＝－3.82+1.00X及Ŷ＝－3.43+1.00X。
During the first crop of 1983, yield losses of rice cultivar Tainung 67 caused by leaf blast disease (Pyricularia oryzae) under various diseased leaf area 5, 11, 25, 55 and 80% were 0.47, 4.26, 21.40, 54.19 and 81.91% at Chia-yi station and 1.35, 4.38, 23.18, 54.01 and 82.50% at Pai-ho, respectively. While cultivar Tainan 5 got 0.46, 4.22, 19.68, 50.53 and 80.93% of yield losses at Chia-yi station, as well as 0.81, 4.07, 20.16, 53.71 and 81.60% of yield losses at Pai-ho, individually.
The results in the first crop of 1987 showed that rice cultivar Tainung 67 caused 0.32, 3.42, 19.08, 46.98 and 79.40% of yield losses and Tainung 70 caused 0.44, 4.35, 22.65, 44.53 and 81.68% of yield losses at Chia-yi station under different diseased leaf area.
The correlation between percentage of yield loss and diseased leaf area both on Tainung 67 and Tainan 5 was Ŷ =－5.89+1.09X and Ŷ =－6.65+1.08X, respectively, during the first crop of 1983. On the other hand, the correlation was Ŷ = －3.82+1.00X and Ŷ =－3.43+1.00X both on Tainung 67 and Tainung 70 derived from the first crop of 1987.
Publisher
農業試驗所
Type
journal article
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