温暖地における前作と耕起法の組み合わせがトウモロコシの生育とアーバスキュラー菌根菌との共生関係に及ぼす影響

日本作物学会紀事

臼木 一英²  山本 泰由¹  田澤 純子¹ 

[1] 中央農業総合研究センター;北海道農業研究センター

关键词: Arbusculer mycorrhizal fungi;    アーバスキュラー菌根菌;    Host plant;    宿主作物;    Maize;    トウモロコシ;    Non host plant;    非宿主作物;    No-tillage;    不耕起;   

DOI  :  10.1626/jcs.76.394

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Effects of previous crops with no-tillage on the growth of maize and symbiotic association with arbusculer mycorrhizal (AM) fungi were studied. Both the propagule density and colonization of arbuscular mycorrhizal fungi in the field with no-tillage were low when buckwheat was precultivated than when maize was precultivated in the previous summer season. It was due to stimulated association of maize with the propagule of AM fungi. The growth of maize and colonization of AM fungi at vegetative stage were also enhanced significantly by the no-tillage treatment after oat (host plant of AM fungi) cultivation. In particular, the cultivation until just before maize seeding greatly increased the association with AM fungi in no-tillage systems in the central region of Japan. It was assumed that colonization of AM fungi might be stimulated by no-tillage after oat cultivation, because the soil was kept undisturbed and the hypha network of AM fungi in the soil was maintained. However, the effect of tillage systems on the final yield of maize was not observed. It was concluded that the previous cultivation with no-tillage might provide a favorable environment for early dry matter production of maize in the field with depressed propagules.

【 授权许可】

Unknown