異なる酸化程度とした鉄コーティング種子が湛水直播水稲の出芽・苗立ちに及ぼす影響

日本作物学会紀事

帖佐 直²  古畑 昌巳²  湯川 智行¹  松村 修² 

[1] 農研機構本部;中央農業総合研究センター北陸研究センター

关键词: Generation of heat;    発熱;    Germination;    発芽;    Iron-coated seed;    鉄コーティング種子;    Oxidation;    酸化;    Rice;    イネ;    Seedling emergence;    出芽;    Seedling establishment;    苗立ち;    Submerged direct seeding;    湛水直播;   

DOI  :  10.1626/jcs.78.242

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Heat production and germination of rice seeds kept in a hopper and vat under oxidizing conditions were examined. In addition, seedling emergence and establishment from these seeds directly seeded with an air-assist row seeder were examined in the field. Under the crowded conditions in the hopper, the seeds coated with reduced iron (sealed) were rapidly heated and showed a reduced germination rate. In contrast, the seeds coated with iron oxide (sealed) showed gradual increase in heat production and gradual decrease in germination rate. The germination rate after seeding (after accumulation) was highest in the seeds coated with iron oxide (sealed) following by those coated with reduced iron (sealed), and reduced iron (oxidized without sealing). This order was reflected in the seedling establishment rate and the dry-weight increase of the plants. Our results indicate that the effects of excessive heating may be avoided by using iron oxide-coated seeds, and that machine sowing may be used in a large scale compartmentalization system to promote seedling emergence and establishment.

【 授权许可】

Unknown