打込み同時施肥と播種後落水が湛水土中点播水稲の出芽・苗立ちと初期生育に及ぼす影響

日本作物学会紀事

有馬 進²  古畑 昌巳¹  野間 貴文²  岩城 雄飛² 

[1]農業・生物系特定産業技術研究機構九州沖縄農業研究センター

[2]佐賀大学農学部

关键词: Ammonium nitrogen;    アンモニア態窒素;    Drainage of flooded water;    湛水直播;    Fertilizer shot;    打込み施肥;    Rice;    稲;    Root length;    根長;    Seedling emergence;    苗立ち;    Seedling establishment;    出芽;    Submerged direct seeding;    落水;   

DOI  :  10.1626/jcs.75.7

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The effect of shooting a slow-release fertilizer with the seed and draining after submerged direct seeding on the establishment of rice seedlings were investigated in pots and containers using a “shooting hill-seeder.” In the pots (containers) seeded with fertilizer, the early growth of the aerial part and the subterranean part were slower than in the pots (containers) with fertilizer incorporated into the plowed layer. The soil with the fertilizer shot had a higher ammonium nitrogen content than the soil with fertilizer incorporated into the plowed layer. Seedling emergence and establishment were improved in the pots with the fertilizer shot that had been draining the flooded water after seeding of rice, and the early growth of the aerial part and the subterranean part were also promoted by the draining compared with that in flooded pots. These results suggest that the delay of the early growth by simultaneous shooting of fertilizer with seed was reduced by draining.

【 授权许可】

Unknown