福岡県農業総合試験場24　(2005) ｐｐ34−38　

　

大豆品種‘サチユタカ’の高品質安定栽培のための適正な播種時期および栽植密度

　

内川修・田中浩平・福島裕助^１）・川村富輝^２）

（農産部）

　

　 大豆早生品種‘サチユタカ’の播種時期および栽植密度が，生育や収量，品質に及ぼす影響を検討し，播種適期や適正栽植密度を明らかにした。

　‘サチユタカ’は６月に播種すると裂皮粒が発生し外観品質が低下した。また、‘フクユタカ’と同じ栽植密度では収量はほぼ同等であるが、株間を狭め栽植密度を高くすると，倒伏することなく収量が５〜21％向上し，裂皮粒の発生も減少した。また，‘サチユタカ’は‘フクユタカ’より茎水分の低下は遅く，成熟期からコンバイン収穫早限までの日数が長くなった。しかし密播することで茎が細くなり，成熟期後の茎水分の低下が早まり収穫時期が早まった。

　以上から‘サチユタカ’の高品質安定生産のためには、６月の早播きを避け，栽植密度は‘フクユタカ’より密植とし，７月中旬の播種では２粒播きで�u当たり19.0本が適当と判断された。

[キーワード：大豆，播種時期，栽植密度，裂皮粒，‘サチユタカ’]

　

　Growth and yield point, effect on the quality of seeding time and planting density of soybean precocious variety 'Sachiyutaka' were examined, and seeding optimal timing and proper planting density were clarified.The broken-skin grain grew, when 'Sachiyutaka' was seeded in June, and the appearance quality lowered. And, though in the planting density equal to ' Fukuyutaka ', yield point was almost equivalent, the yield point improved 5〜21% without lodging in respect of interval between roots, when narrowness planting density is heightened, and the generation of the broken-skin grain also decreased.　And, the lowering of the 'Fukuyutaka ' approach stem moisture was slow for ,' Sachiyutaka', and days to combine harvest starting time from the puberty were lengthened. However, the stem narrowed by dense planting, and the lowering of the stem moisture after the puberty was accelerated, and the harvest time was advanced.In the seeding in July the middle of month, early sowing in June was avoided from them for high-quality and stable production of 'Sachiyutaka', and the planting density was made to be 'Fukuyutaka' approach dense planting, and it was judged that 19.0 per �u was adequate in a 2 grain scatter.

　

[Key words: Soybean , seeding time, planting density, seed coat cracking , ' Sachiyutaka ’ ]

1)筑後分場　2)農政部農業振興課

全文(pdf 651KB )