頁籤選單縮合
題 名 | Agricultural Damage by Local Wind and its Countermeasure=地方風造成之農業損失及因應對策 |
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作 者 | Kurose,Yoshitaka; Maki,Taichi; | 書刊名 | 作物、環境與生物資訊 |
卷 期 | 1:4 2004.12[民93.12] |
頁 次 | 頁297-304 |
分類號 | 433.13 |
關鍵詞 | 飛越高山的氣流; 地方風; 風害; Airflow over mountains; Local wind; Wind damage; |
語 文 | 英文(English) |
中文摘要 | 摘要 在穩定的氣流層當東南方向的盛行風 在850 hPa 氣壓下風速超過10 m s-1 時,在 Aso somma 地區將形成飛越高山的氣流。 此一氣流將涵蓋Aso somma 山谷地區,並 產生一股風速超過20 m s-1 的強烈東向地方 風(local wind) , 被稱為“Matsubori Kaze”。此種“Matsubori Kaze”現象經常發 生於當地的每年四月及五月,且造成小麥及 大麥的減產。當“Matsubori Kaze”現象在抽 穗後30 天內颳起強風時,將移除大麥的芒 而減少光合產物的生成,在妨礙穀粒的正常 成熟下導致產量降低。在調查的四年期間, 有三年發生顯著的大麥去芒情境,在廣大地 區出現不等的減產結果。在小麥部分,僅有 其中一年當“Matsubori Kaze”現象發生於 收穫之前時,由於去穗掉粒效應而造成產量 的下降,受影響地區甚小。因此,在可能發 生“Matsubori Kaze”現象的地區,栽植小麥 優於栽植大麥。 |
英文摘要 | ABSTRACT The airflow over mountains is formed on the Aso somma under conditions in stable stratification and the prevailing southeastly wind with a speed of over 10 m s-1 at 850 hPa pressure level. The wind converges in the valley of Aso somma, creating a strong easterly wind with a speed of over 20 m s-1. This strong easterly wind is called as “Matsubori Kaze”. “Matsubori Kaze” is often generated in April and May. “Matsubori Kaze” that blows at this period decreases the yield of wheat and barley. The yield of barley has decreased when the “Matsubori Kaze” blows within 30 days after the heading time because “Matsubori Kaze” removes the awn of barley, thus obstructing the ripening of the grain by eliminating photosynthesis by the awn. The awn of barley was removed at three years among investigations of four years, and the damage area was wide. On the other hand, the yield of wheat has decreased only when “Matsubori Kaze” blows immediately before the harvest because “Matsubori Kaze” causes the shedding of wheat. The shedding of wheat occurred only at one year, and the damage area was very limited. It is thought that wheat is more suitable for the cultivation in this region than barley. |
本系統中英文摘要資訊取自各篇刊載內容。