南西諸島の極強酸性土壌における牛ふん堆肥・豚ぷん堆肥施用による ソバ （Fagopyrum esculentum Moench） の減化学肥料栽培

日本作物学会紀事

住 秀和⁴  山口 典子³  長浜 隆市¹  荒川 祐介³  田中 章浩³  生駒 泰基²  原 貴洋³ 

[1] 沖縄県農林水産部;農研機構 近畿中国四国農業研究センター;農研機構 九州沖縄農業研究センター;大宜味村役場

关键词: Acid soil;    酸性土壌;    Composted manure;    家畜ふん堆肥;    Nitrogen;    窒素;    Okinawa;    沖縄;    Phosphorus;    リン酸;    Pottasium;    カリ;    Reduced fertilization;    減肥;    Soil Erosion;    赤土等流出;   

DOI  :  10.1626/jcs.83.118

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Introducing buckwheat to acid soil region is expected to reduce soil erosion in subtropical Japan. We examined whether the amount of chemical fertilizer applied can be reduced by applying composted manure, which is produced locally in large amounts, since manure substantially improves grain yield of buckwheat grown on acid soil. When 1 kg m-2 of composted manure from pig and cow was applied, grain yield, yield components, shoot weight, and the concentrations of phosphorus and potassium in the shoot were not lowered even when phosphorus and potassium fertilizer were not applied. When 1 kg m-2 of composted manure of pig was applied, omittion of phosphorus, potassium and nitrogen lowered the nitrogen concentration in shoot and grain, but did not lower grain yield or yield components. Even when chemical fertilizer was omitted, the nitrogen, phosphorus and potassium contents of soil after buckwheat harvest were not lower than before sowing buckwheat. These results indicate that application of nitrogen, phosphorus and potassium fertilizers can be reduced by application of 1 kg m-2 of composted manure.

【 授权许可】

Unknown