福岡県農業総合試験場研究報告23 (2004) pp 48 - 53
幅広型畝内施肥器の開発と開発器を使った
キャベツ初冬出し栽培における減肥技術
森山友幸＊・井手 治・石坂 晃
畝内で広範囲に肥料が散布できる幅広で扁平な形状の肥料吐出管がついた畝内施肥器を開発した。この開発器を利用したキャベツ栽培の畝内施肥栽培では，畝内で肥料が広範囲に散布され，畝内土壌の広い範囲に肥料から窒素成分が溶出する。キャベツの初冬出し栽培において，全面全層施肥と開発した幅広型畝内施肥器を用いた畝内施肥を組み合わせることにより，窒素施用量を慣行施肥の2割減に相当する26kg/10aまで減肥しても慣行施肥法と同等以上の結球重が得られた。
［キ−ワ−ド：キャベツ，畝内施肥，窒素施用量，減肥，結球重］
Development of a Strip Fertilizer Applicator for Ridges and Method for Reducing Total Amount of Fertilization for Cabbage Harvested in Winter. MORIYAMA Tomoyuki, Osamu IDE and Akira ISIZAKA (Fukuoka Agric. Res. Cent., Chikushino, Fukuoka 818-8549, Japan) Bull. Fukuoka Agric. Res. Cent., 23: 48 - 53 (2004)
We have developed a machine that disperses fertilizer over ridges in even and wide strips. The applicator contains an oblong outlet which discharges fertilizer evenly, depending on the width of a ridge. This way of fertilizing causes nitrogen to be dissolved and released from the fertilizer in the entire field not limited to the ridges. Thus, the cabbages harvested in winter displayed equal or heavier head weight compared to those grown according to the established amount of fertilizers, even though the nitrogen applied was reduced to 26kg per 10a (usual 2 ×10% decrease).
[Key words: cabbage, application of strip fertilizer in ridges, amount of nitrogen fertilizer applied, decrease in the amount of fertilizer applied, head weight]
＊連絡責任者（野菜栽培部）
