水田転換畑ダイズ作におけるチゼル有芯部分耕を活用した狭畦栽培が生育・収量および雑草抑制に及ぼす影響

日本作物学会紀事

片山 勝之¹  高橋 智紀²  齋藤 秀文² 

[1] 農研機構近畿中国四国農業研究センター;農研機構東北農業研究センター

关键词: 狭畦栽培;    子実収量;    水田転換畑;    相対光量子密度;    ダイズ;    チゼル型有芯部分耕;    播種密度;    Narrow-row culture;    Seed yield;    Upland field converted from paddy field;    Relative photosynthetically active radiation;    Soybean;    Inter-row strip tillage with chisel plough;    Planting density;   

DOI  :  10.1626/jcs.85.204

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

We adapted the narrow-row culture by inter-row strip tillage with a chisel plough (NCISTCP), which can alleviate dry and wet injuries, to the upland field converted from paddy field, and investigated the growth and yield of soybean cv.‘Ryuho’ planted at two densities, namely normal and sparse planting, and also the amount of weed emergence in the middle of June in 2012 and 2013 in Daisen, Akita prefecture. Regardless of planting density, the rate of stand establishment was significantly high and weed emergence was low, but the extent of lodging was high in NCISTCP compared with those in wide-row culture by conventional tillage (WCCT). Seed yield in NCISTCP irrespective of planting density was similar to that in WCCT with normal planting (conventional culture). In NCISTCP with sparse planting the pod number m-2 was increased up to almost the same number as that in conventional culture due to narrow-row, and the yield was increased. These results inferred that inter-row strip tillage with a chisel plough was well adapted to narrow-row culture, that the labor for intertillage and ridging can be saved, and 24% reduction of seeds may be possible by NCISTCP with sparse planting compared with the conventional culture.

【 授权许可】

Unknown