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  1. 学術雑誌論文
  2. その他
  1. 部局別インデックス
  2. 農学部

南西諸島におけるジャイアントスターグラス草地の低温期生産性に及ぼすイタリアンライグラス追播量の影響

http://hdl.handle.net/20.500.12000/44789
http://hdl.handle.net/20.500.12000/44789
65752cca-4b4e-4091-a6b5-021a8ffa3d03
名前 / ファイル ライセンス アクション
vol61_n2_p77.pdf vol61_n2_p77.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2019-09-10
タイトル
タイトル 南西諸島におけるジャイアントスターグラス草地の低温期生産性に及ぼすイタリアンライグラス追播量の影響
言語 ja
作成者 波平, 知之

× 波平, 知之

ja 波平, 知之

石垣, 圭一

× 石垣, 圭一

ja 石垣, 圭一

井村, 信弥

× 井村, 信弥

ja 井村, 信弥

堤, ひとみ

× 堤, ひとみ

ja 堤, ひとみ

岡, 朋子

× 岡, 朋子

ja 岡, 朋子

屋良, 朝宣

× 屋良, 朝宣

ja 屋良, 朝宣

玉城, 政信

× 玉城, 政信

ja 玉城, 政信

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
言語 ja
権利情報 日本暖地畜産学会
主題
言語 ja
主題Scheme Other
主題 イタリアンライグラス追播量
言語 ja
主題Scheme Other
主題 合計相対収量
言語 ja
主題Scheme Other
主題 ジャイアントスターグラス
言語 ja
主題Scheme Other
主題 低温期生産性
内容記述
内容記述タイプ Other
内容記述 ジャイアントスターグラス(GS)草地に,低温期にイタリアンライグラス(IR)を4 水準(0.7,1.0,1.5,2.5 g/㎡)で追播し,播種量が混播草地の乾物収量ならびにGSとIRの競争関係に及ぼす影響を,南西諸島で検討した.IR 追播に伴う増収は刈取り回次で異なり,全ての処理区で増収効果があったのは平均気温が最も低かった2 回目刈取り時のみであった.低温期間内の3 回の刈取り合計乾物収量は,処理区間での有意差はなかったが,播種量の増加に伴い収量構成割合はIRで増加し,GSで減少した.IR追播区の相対収量(RY)も,GSとIRの両種ともに0.5 以上とはならず,どちらか一草種の優位性によってRYが0.5 以上となるのみであり,他草種の生長を抑制する競争関係にあると推察された.低温期間中,全ての刈取り時に合計相対収量(RYT)が1 以上となったのは,IR追播量が0.7 g/㎡の処理区のみであった.
内容記述タイプ Other
内容記述 A field experiment was conducted to determine the optimum over-seeding rate of Italian ryegrass (IR) among four levels 0.7, 1.0, 1.5 and 2.5 g/㎡) on cool-season production of giant stargrass (GS) stand in south-western Okinawa island, Japan. The effect of over-seeding IR was positive only at the second cutting among three defoliation, due to the lowest air temperature at 18.3℃ during the regrowth period. Cumulative dry matter yield among three cuttings tended to be higher at IR seeding rate of 0.7g/㎡ than GS pure stand. The yield of IR increased with the increasing over-seeding rates, while that of GS decreased. Relative yield (RY) of GS and IR, determined by yields of mixed grown GS and IR relative to those of pure GS and IR stands, respectively, was over 0.5 only in one species, however relative yield total (RYT), determined by sum of RY of both species, was over 1.0 only at IR over-seeding of 0. 7 g/㎡ in all three cutting times. The interspecific competition was causes of limiting growth of the species in mix culture. From these results, it is concluded that IR over-seeding at 0.7 g/㎡ to GS stand might be effective for getting higher yield in cool-season in south-western Okinawa island, Japan.
内容記述タイプ Other
内容記述 論文
出版者
言語 ja
出版者 日本暖地畜産学会
言語
言語 jpn
資源タイプ
資源タイプ journal article
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/44789
識別子タイプ HDL
関連情報
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.11461/jwaras.61.77
関連識別子
識別子タイプ DOI
関連識別子 10.11461/jwaras.61.77
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 2185-1670
収録物識別子タイプ ISSN
収録物識別子 2185-081X
収録物識別子タイプ NCID
収録物識別子 AA12503853
収録物名
言語 ja
収録物名 日本暖地畜産学会報
書誌情報
巻 61, 号 2, p. 77-82
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