Ｈ24 農業農村工学会大会講演会講演要旨集 ［3-20(P)］ ἙᕝỈ⏣℺₅ᆅ༊࠾ࡅࡿᮎ➃Ỉ⤌⧊ࡢ␒Ỉᑐᛂ Activities of lower branch WUGs under the condition of rotational systems ∗ ۑຍ⸨ᬛ , ▼ᩔ ࡣࡌࡵ ∗∗ KATO Tomohiro∗, ISHII Atsushi∗∗ ᡃࡀᅜ࠾ࡅࡿἙᕝࢆỈ※ࡍࡿỈ⏣℺₅ ࡣࠊᆅ༊ෆࡢỈ㊰ࢆ୍ᩧ㐃⥆㓄Ỉࡍࡿࡢࡀᇶ ᮏ࡛࠶ࡿࠋࡋࡋࠊ␗ᖖῬỈࡣࠊᆅ༊ࢆ࠸ ࡃࡘࡢࣈࣟࢵࢡศࡅࠊᆅ༊࡛ᐃࡵࡓ࣮ࣝࣝ ᚑࡗ࡚㡰␒㓄Ỉࡋ࡚⠇Ỉࡍࡿࠕ␒Ỉࠖࡀᐇ ࡉࢀࡿࠋࡇࡢ␒Ỉࡢᣢࡘ⠇Ỉᢏ⾡ࡣࠊ㏆ᖺࠊ ᅜෆእ࡛ὀ┠ࡉࢀ࡚࠸ࡿࠋ つᶍỈ⏣℺₅ᆅ༊ࡢ␒Ỉࡣࠊ⏝Ỉࢆ⟶⌮ࡍ ᅗ ᐑᕝ⏝Ỉᆅ༊⏝Ỉ㊰⥙ᴫᛕᅗ ࡿᅵᆅᨵⰋ༊ࡼࡗ࡚ᐇࡉࢀࡿࠋࡋࡋࠊᅵ ᆅᨵⰋ༊ࡢ㓄Ỉ᧯సࡣࠊ␒Ỉ࡛ࡶᖿ⥺࠾ࡼࡧ ᨭ⥺⏝Ỉ㊰ࡢ⠊ᅖࡲࡿࡢࡀ୍⯡ⓗ࡛ࠊᨭ ㊰)ࢆὶୗࡋࠊᖿ⥺Ỉ㊰ୖࡢศỈᕤࡼࡾᨭ⥺Ỉ ⥺௨ୗಶࠎࡢ㎰ᆅࡲ࡛ࡢ㓄Ỉ᧯సࡣᨭ⥺ࡈ ㊰(ϪḟỈ㊰)ศỈࡉࢀࡿࠋࡉࡽᨭ⥺Ỉ㊰ ࡢᮎ➃ࡢỈ⤌⧊ࡼࡗ࡚⾜ࢃࢀࡿࠋ ࡽᮎ➃Ỉ㊰(ϫḟỈ㊰)ศỈࡉࢀྛ㞟ⴠ ࡇࢀࡲ࡛ࠊᮎ➃ࡢỈ⤌⧊↔Ⅼࢆ࠶࡚ࡓ◊ 㓄Ỉࡉࢀࡿࠋᐑᕝ⏝ỈᅵᆅᨵⰋ༊ࡣࠊ2 ᮏࡢ ✲ࡣᑡ࡞ࡃࠊ␒Ỉ࠾ࡅࡿᑐᛂࡣ᫂ࡽ࡞ ϩḟỈ㊰ࡼࡗ࡚ཷ┈ᆅࢆ AࠊB ࡘࡢࣈࣟࢵ ࡗ࡚࠸࡞࠸ࠋࡑࡇ࡛ࠊᮏ◊✲࡛ࡣ୕㔜┴ࡢᐑᕝ ࢡศࡅࠊྛࣈࣟࢵࢡࢆ 1 ᪥ࡈ㓄Ỉࡍࡿࡇ ⏝Ỉᆅ༊ࢆᑐ㇟ࠊᮎ➃ࡢỈ⤌⧊ࡢ␒Ỉᑐᛂ ࡼࡾ␒Ỉࢆᐇࡋ࡚࠸ࡿࠋ␒Ỉࠊᐑᕝ⏝ ࢆ᫂ࡽࡍࡿࡇࢆ┠ⓗࡍࡿࠋ ỈᅵᆅᨵⰋ༊ࡣࠊᇶᮏⓗࡣϩḟỈ㊰ࡽϪḟ ㄪᰝᑐ㇟ᆅ༊ Ỉ㊰ࡢศỈ᧯సࡲ࡛ࢆᢸ࠸ࠊϪḟỈ㊰௨ୗࡢ ᐑᕝ⏝Ỉᆅ༊ᴫせ 㓄Ỉ᧯సࡣᮎ➃ࡢỈ⤌⧊ࡀ⾜࠺ࠋᮏሗ࡛ࡣࠊ ᐑᕝ⏝Ỉᆅ༊ࡣ 32 ᖺ㹼41 ᖺࡢᅜႠ㎰ᴗ ᮎ➃Ỉ⤌⧊ࡢ␒Ỉᑐᛂࡢࡋ࡚ࠊᑐ㇟ᖺ Ỉᴗ(ᐑᕝ⏝Ỉᴗ)ࡼࡾ℺₅ࢆ㛤ጞࡋࡓࠋ ᗘࢆᖹᡂ 23 ᖺࠊᑐ㇟ᆅ༊ࡋ࡚Ỉ㊰ᵓ㐀ࡀ㛤 ᴗ๓ࡣ⁀ụࠊᑠἙᕝࠊᆅୗỈࢆỈ※ࡋࡓᑠ Ỉ㊰ࡢᆅ༊(⺅㔝⥺ᆅ༊)ࠊࣃࣉࣛࣥࡢᆅ つᶍ࡞Ỉ✄స࣭⏿సᆅ༊ࡀⅬᅾࡋ࡚࠸ࡓࠋᴗ ༊(ᐑᕝᕥᓊ➨ᆅ༊)ࢆ㑅ᐃࡋࡓࠋ ࡛ᐑᕝ⢖⏕㢌㤳ᕤࢆᘓタࡋࠊᖹᡂ 24 ᖺ⌧ᅾࠊ ᮎ➃Ỉ⤌⧊ࡢ␒Ỉᑐᛂ̿㛤Ỉ㊰ᆅ༊̿ Ỉ⏣⣙ 4000ha ࢆ℺₅ࡋ࡚࠸ࡿࠋཷ┈㎰ᐙࡣ⣙ ⺅㔝⥺ᆅ༊ࡢタ࣭⤌⧊ 6500 ᡞ࡛࠶ࡿࠋ ⺅㔝⥺ࡣཎ࣭⺅㔝࣭㔝⠛ࡢ 3 ࡘࡢ㛵ಀ㞟ⴠ ᐑᕝ⏝Ỉᆅ༊ࡢỈタ␒Ỉ᪉ᘧ ⏝Ỉࢆ౪⤥ࡍࡿỈ㊰(ϪḟỈ㊰)࡛࠶ࡾࠊཷ┈㠃 ᐑᕝ⏝Ỉᆅ༊ࡢỈ㊰⣔ࢆᅗ ♧ࡍࠋ㢌㤳ᕤ ࡽྲྀỈࡉࢀࡓ⏝Ỉࡣᖿ⥺Ỉ㊰(ϨḟࠊϩḟỈ ✚ࡣỈ⏣ 95ha ࡛࠶ࡿࠋ ྛ㞟ⴠ࡛ࡣࠊ㞟ⴠෆࡢ㓄Ỉㄪᩚࢆ⾜࠺ࠕ㓄Ỉ ୕㔜ᏛᏛ㝔⏕≀㈨※Ꮫ◊✲⛉ Graduate School of Bioresources, Mie University ⟃ἼᏛᏛ㝔 ⏕⎔ቃ⛉Ꮫ◊✲⛉ Graduate School of Life and Environmental Sciences, University of Tsukuba ␒ỈࠊᅵᆅᨵⰋ༊ࠊỈ⤌⧊ࠊἙᕝ℺₅ࠊỈ⏣℺₅ － 292 － ⟶⌮⪅ࠖࡀ㑅ฟࡉࢀࡿࠋ㓄Ỉ⟶⌮⪅ࡣϪḟỈ㊰ ϪḟỈ㊰ศᒱࡍࡿศỈᕤ 1 ⟠ᡤࡢࡳ᧯సࢆ⾜ ୖࡢศỈᕤࢆ᧯సࡍࡿᶒ㝈ࢆᣢࡗ࡚࠸ࡿࠋ⺅㔝 ࡗ࡚࠸ࡓࡀࠊࣃࣉΰධࡋࡓ✵Ẽࡼࡾ₃Ỉ 㞟ⴠ࡛ࡣࠊ㑅ᣲࡼࡾ௵ᮇ 1 ᖺ࡛ 1 ே㑅ฟࡉࢀ 㞀ᐖࡀ㢖Ⓨࡋࡓࡓࡵࠊ⌧ᅾࡢࡼ࠺࡞ᑐᛂኚ᭦ ࡿࠋ1 ᮇົࡵࡿ 2 ᖺ㛫ࡣ㑅ࡤࢀ࡞࠸ࡀࠊᅇᩘ ࡉࢀࡓࠋࡇࡢᆅ༊ࡣϪḟỈ㊰ୖࡢศỈᕤࡼࡾ ไ㝈ࡣ࡞࠸ࠋሗ㓘ࡣ2 �ᖺ ࠋ⺅㔝㞟ⴠ 18 ࡢ⏝Ỉࣈࣟࢵࢡศ㢮ࡉࢀࠊ␒Ỉࠊ⏝Ỉ ࡣ㎰ᐙࡀ 45 ᡞ࠶ࡿࡀࠊ␒Ỉ➼ࠊ㓄Ỉㄪᩚࡀ ࣈࣟࢵࢡෆ࡛ㄪᩚࡀ⾜ࢃࢀࠊ⏝Ỉࣈࣟࢵࢡ㛫࡛ ᚲせ࡞㎰ᐙࡽࡢせᮃ㝶ᑐᛂྍ⬟࡞ ࡢㄪᩚࡣ⾜ࢃࢀ࡞࠸ࠋྛ㞟ⴠ࡛ࡣࠊ㓄Ỉ⟶⌮⪅ ᑓᴗ㎰ᐙ(25 ᡞ)ࡽ㑅ฟࡉࢀࡿࠋ ࡀ 1㹼2 ྡ㑅ฟࡉࢀࠊ㞟ⴠෆ࠾ࡅࡿ㓄Ỉ᧯స ␒Ỉࡢᑐᛂ ࢆ⾜ࡗ࡚࠸ࡿࠋୖᆅ⏫㞟ⴠ࡛ࡣࠊ㓄Ỉ⟶⌮⪅ ␒Ỉࠊ⺅㔝⥺ࡢ㏻Ỉ᪥ࡣᖹỈᖺྠᮇࡢ ᪥㏦Ỉ㔞ࡢ 1.5 ಸ㏆ࡃࡢỈࡀ౪⤥ࡉࢀ࡚࠸ࡿࡀࠊ ௵ᮇࡣ࡞ࡃࠊ10 ᖺ⛬ྠࡌேࡀົࡵ࡚࠸ࡿࠋ ␒Ỉࡢᑐᛂ ࡑࢀ࡛ࡶ㞟ⴠࡢ᭱ᮎ➃ࡢỈ⏣ࡲ࡛බᖹ⾜ࡁ ୖᆅ㞟ⴠ(ཷ┈㠃✚ 170ha)࡛ࡣࠊ㞟ⴠෆ Ώࡽࡎࠊ㞟ⴠෆ࡛㓄Ỉ⟶⌮⪅ࡀ⏝Ỉࡢㄪᩚࢆ⾜ 10m ㏆࠸㧗పᕪࡀ࠶ࡾࠊᶆ㧗ࡢ㧗࠸Ỉ⏣ࡣỈࡀ ࡗ࡚࠸ࡿࠋ㞟ⴠෆࡢಶே㎰ᐙࡽࡢⱞ࣭せᮃ ࡾࡃࡃ࡞ࡗ࡚࠾ࡾࠊࡑࡢㄪᩚࢆ㓄Ỉ⟶⌮ ࡣ㓄Ỉ⟶⌮⪅ࡀཷࡅࡅࠊ๓௵⪅ࡸᅵᆅᨵⰋ༊ ⪅ࡀ⾜ࡗ࡚࠸ࡿࠋ㓄Ỉ⟶⌮⪅ࡣࠊ␒Ỉᮇ㛫୰ࠊ ࡢ⏝Ỉጤဨ࡞┦ㄯࡋ࡞ࡀࡽᑐᛂࢆ⾜ࡗ࡚ ẖ᪥ぢᅇࡾࢆ⾜࠺ࡇࡼࡾᑐᛂࢆ⾜࠺ࠋࡑࡢ ࠸ࡿࠋ㓄Ỉ⟶⌮⪅ࡣࠊ␒Ỉᮇ㛫୰(4/12~5/24) 㝿ࠊ⤥Ỉᰦࡽ✵Ẽࡀΰධࡍࡿࡇࢆ㜵ࡄࡓࡵࠊ ࡢ⣙ 40 ᪥㛫ࠊᮅኤ 2 ᅇࡢぢᅇࡾࢆ⾜࠸ࠊᚲせ ᩿Ỉ᪥࡛ࡶࠊぢᅇࡾࢆᐇࡋࠊಶࠎࡢỈ⏣ࡢ⤥ ᛂࡌ࡚ϪḟỈ㊰ୖࡢศỈᕤࡢ᧯సࢆ⾜ࡗࡓࠋ Ỉᰦࢆ㛢ࡵࡿࡇࡀᚲ㡲࡞ࡿࠋ㓄Ỉ⟶⌮⪅ࡣࠊ ⺅㔝㞟ⴠࡢୖὶཎ㞟ⴠࠊୗὶ㔝⠛㞟ⴠࡢ ㏻Ỉ᪥ࠊ 㞟ⴠෆࡢ㎰ᆅࢆ 2 ࡘࡢࣈࣟࢵࢡศࡅࠊ ㎰ᆅࡀ⨨ࡋ࡚࠸ࡿࡀࠊࡑࢀࡽࡢ㞟ⴠࡢ㛫࡛ࡢ ኪ࡛㛫ࢆศࡅ࡚㓄ỈࡋࡓࡾࠊϫḟỈ㊰ୖ ㄪᩚࡣ⾜ࢃࢀ࡚࠾ࡽࡎࠊ⮫࣏ࣥࣉࢆタ⨨ࡍࡿ ࡢไỈᘚᆅୗỈ࣏ࣥࣉࢆ⏝ࡋ࡚ࠊỈࡢ ࡞ࠊྛ㞟ⴠ࡛ಶูᑐᛂࢆ⾜ࡗ࡚࠸ࡿࠋ⺅㔝 ࡾࡃ࠸㎰ᆅ㞟୰ⓗ㏦Ỉࡍࡿ࡞ࡢᑐᛂ 㞟ⴠ࡛ࡶỈ㊰⮫࣏ࣥࣉࢆ 2 ྎタ⨨ࡋࠊ␒ ࢆ⾜ࡗࡓࠋ Ỉᮇ㛫୰ࠊ⏝Ỉࡢᒆࡁࡃ࠸㎰ᆅ㞟୰ⓗ ࡲࡓࠊ⏝Ỉࣈࣟࢵࢡ㞟ⴠቃ⏺ࡀ୍⮴ࡋ࡚࠸ ㏦Ỉࡋࡓࠋ ࡞࠸ࡇࡽࠊ㞟ⴠ㛫࡛ࡢ⏝Ỉㄪᩚࡀᚲせ࡞ ᮎ➃Ỉ⤌⧊ࡢ␒Ỉᑐᛂ̿⟶Ỉ㊰ᆅ༊̿ ࡿࡇࡀ࠶ࡿࠋࡑࡢሙྜࠊᐑᕝᕥᓊ➨ᅵᆅᨵ ᐑᕝᕥᓊ➨ᆅ༊ࡢタ࣭⤌⧊ Ⰻ༊ࡢᙺဨࡀ㞟ⴠ㛫ࡢㄪᩚࢆ⾜ࡗ࡚࠸ࡿࠋ ᐑᕝᕥᓊ➨ᆅ༊ࡢ⏝Ỉࡣࠊ 42 ᖺࡢᅡ ࠾ࢃࡾ ሙᩚഛᴗ(ᮎ➃Ỉ㊰ࡣࣃࣉ࡛ࣛࣥᩚഛ)ࡢ ␒Ỉࠊࣃࣉࣛࣥᆅ༊࡛ࡣࠊಶࠎࡢỈ⏣ 㝿タ❧ࡉࢀࡓᐑᕝᕥᓊ➨ᅵᆅᨵⰋ༊ࡼ ࡢ⤥Ỉᰦࡢ᧯సせࡍࡿປຊࡀࡁࡃ࡞ࡿ ࡗ࡚⟶⌮ࡉࢀ࡚࠸ࡿࠋ㛵ಀ㞟ⴠࡣ 9 ࡘ࡛ࠊཷ┈ ࠸࠺ࡀ☜ㄆࡉࢀࡓࠋ 㠃✚ࡣỈ⏣⣙ 500haࠊ⤌ྜဨࡣ⣙ 800 ྡ࡛࠶ࡿࠋ ࡲࡓࠊᅵᆅᨵⰋ༊ࡣࠊ␒Ỉ࠾ࡅࡿᮎ➃ࡢỈ ␒Ỉࠊᐑᕝ⏝ỈᅵᆅᨵⰋ༊ࡣࠊࡇࡢᆅ༊ ⤌⧊ࡢປຊ㈇ᢸࢆ㍍ῶࡉࡏࡿࡓࡵࠊ㏻Ỉ᪥ࡢ ᑐࡋ࡚ࡣࠊϪḟỈ㊰ୖࡢศỈᕤ(18 ⟠ᡤ)ࡲ࡛᧯ ࣈࣟࢵࢡᑐࡋ࡚ᖹỈᖺࡼࡾከࡃࡢỈࢆ㏦Ỉ సࢆ⾜࠺ࠋࡢᆅ༊᧯స⠊ᅖࡀ␗࡞ࡿࡢࡣࠊ ࡋ࡚࠸ࡿࠋࡑࢀࡶ㛵ࢃࡽࡎࠊᮎ➃ࡢỈ⤌⧊ ࡇࡢᆅ༊ࡀࣃࣉࣛࣥᆅ༊࡛࠶ࡿࡓࡵࠊ␒Ỉ ࡛ࡣࠊከࡃࡢປຊࢆせࡋ࡚࠸ࡿࡇࡀࢃࡗࡓࠋ ࡛✵Ẽࡀࣃࣉෆΰධࡍࡿࡢࢆ㜵ࡄࡓࡵ࡛ ⌧ᅾࠊᮎ➃ࡢỈ⤌⧊ࡢᙅయࡀᠱᛕࡉࢀ࡚࠸ ࠶ࡿࠋᖹᡂ 17 ᖺࡢ␒Ỉࡲ࡛ࡣࠊᐑᕝ⏝Ỉᅵᆅ ࡿࡇࡶ࠶ࡾࠊ␒Ỉࡢ㓄Ỉປຊࢆ㍍ῶࡉࡏࡿ ᨵⰋ༊ࡣࠊࡇࡢᆅ༊࠾࠸࡚ࡶࠊϩḟỈ㊰ࡽ タࡢᩚഛࡀᚲせ⪃࠼ࡽࢀࡿࠋ － 293 －
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