肥効調節型肥料の全量基肥施用に対するダイズの収量と根の反応

日本作物学会紀事

二瓶 直登¹  丹治 克男¹ 

[1] 福島県農業試験場

关键词: Co–situs application;    接触施肥;    Single basal application;    全量基肥;    Soybean;    ダイズ;    Nitrogen fertilizer;    窒素施肥;    Root;    æ ¹;    Controlled availability fertilizer;    肥効調節型肥料;   

DOI  :  10.1626/jcs.73.18

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Single basal dressing with controlled availability fertilizer was conducted by co–situs and broadcast application for pot, frame and field cultivation of soybean (cv. Fukuibuki). In the pot experiment, soybean cultivated with the single basal dressing by co–situs application of 70–day–type coated urea had thinner taproots and reduced root weight and root nodule number than the control, which was cultivated with the single basal dressing by broadcast application of chemical fertilizer plus topdressing with 40–day–type coated urea. In the frame experiment with the single basal dressing by broadcast application, nitrogen–use efficiency and the amount of nitrogen taken up from the fertilizer were similar to those in the control plot to which ammonium sulfate was top dressed at flowering stage in addition to basal dressing. However, in the frame experiment with the single basal dressing by co–situs application, the nitrogen–use efficiency and the nitrogen uptake were lower than in the control plot. In the field experiment for two years, yield in the plot with the single basal dressing by either co–situs or broadcast application was lower than that in the control plot. The amount of nitrogen released from availability–controlled fertilizer was considered insufficient for soybean growth, root growth being suppressed in the plot with the basal dressing by co–situs application, and resulting in reduced uptake of nitrogen from the soil.

【 授权许可】

Unknown