水稲新品種「ふさおとめ」の品種特性を考慮した栽培法

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タイトル別名
  • Establishment of Cultivation Methods for the New Rice Cultivar "Fusaotome".
  • ヒンシュ イデン シゲン スイトウ シン ヒンシュ フサオトメ ノ ヒンシュ トクセイ オ コウリョ シタ サイバイホウ

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説明

In 1995, Chiba Prefectural Agricultural Experiment Station bred a new paddy rice cultivar "Fusaotome" which is tolerant to cool weather, early maturing(same as "Hananomai"), and has high grain-quality and excellent flavor with heavy grain weight(exceed "Hananomai" by 1.0-1.5g in 1000-kernel-weight). We determined the recommended target of the husked-rice yield to be 5.4-6.0 ton/ha in sandy/loam soil fields, and 5.4-5.7 ton/ha in clay soil fields. In order to achieve these target yields, the necessary numbers of grains and panicles were 28, 000-32, 000 and 480-510 per m2, respectively, in sandy soil fields, and 28, 000-32, 000 and 450-480, respectively in loam soil fields. In clay soil fields, the necessary number of grains was 28, 000-30, 000 per m2 and that of panicles was 470-500 per m2. In order to secure the above number of panicles, the necessary basal dressing of nitrogen fertilizer was 40-50 kg/ha in sandy, 30-40 kg/ha in loam and 10-20 kg/ha in clay soil fields, and the necessary top dressing at 18 days before the heading stage was 30kg/ha in sandy and loam and 10-20 kg/ha in clay soil fields. The delay of transplanting made it difficult to achieve the above values and caused the growth of tall culms and severe lodging, resulting in lowering of the grain quality. Therefore, the transplanting should be done by the end of April.

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