淡色黒ボク土壌におけるリン酸・カリウム無施肥が バレイショの生育と収量及びジャガイモそうか病に与える影響

日本作物学会紀事

田中 拡¹  笠島 真也¹  中丸 康夫¹  伊藤 博武¹  菊池 健太郎¹  小林 輝和¹  池田 拓真¹  吉田 穂積¹ 

[1] 東京農業大学生物産業学部

关键词: Brown andosol;    火山性土;    Common scab of potato;    そうか病;    No fertilization;    無肥料;    Phosphorous;    リン;    Potassium;    カリウム;    Potato;    バレイショ;    Yield;    収量;   

DOI  :  10.1626/jcs.81.404

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

From 2007 to2009, we examined the growth and yield of potato without application of phosphorus and potassium fertilizer in the brown Andosol field in the Abashiri area, Hokkaido. Although the content of both available phosphoric acid and exchangeable potassium were lower in the plot without these fertilizer than in the fertilized plot, the number of tubers, the tuber yield and starch content were not significantly influenced by the absence of applied phosphorus and potassium fertilizers. We also examined the occurrence of common scab of potato, but found no significant difference in the occurrence of disease between the plants with and without application of phosphate and potassium fertilizers. Thus, the growth and yield of potato was not reduced on the field without applied phosphorus and potassium fertilizer in brown Andosol field, which contain a large amount of available phosphoric acid and the exchangeable potassium. This study also suggested that no phosphorus and potassium fertilizer need be applied for at least two years, since the amount of available phosphoric acid and the exchangeable potassium is kept above the criterion level in this type of soil.

【 授权许可】

Unknown