葉稻熱病引起水稻產量損失估計

Estimation of Rice Yield Losses Caused by Leaf Blast Disease

蔡武雄(W. H. Tsai)

《中華農業研究》 37卷2期 (1988/06) Pp. 207-210

https://doi.org/10.29951/JARC.198806.0010

摘要

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爲0.47、4.26、21.40、54.19及81.91%，在白河之產量損失率各爲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%，在白河各爲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號分別爲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號各爲Ŷ＝-3.82+1.00X及Ŷ＝-3.43+1.00X。

並列摘要

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.