水稲における不耕起V溝直播栽培の開発

日本作物学会紀事

釋 一郎¹  濱田 千裕³  中嶋 泰則²  林 元樹³ 

[1] 愛知県米麦振興協会;愛知県庁;愛知県農業総合試験場

关键词: Growth and yield;    生育・収量;    No-till direct seeding;    不耕起乾田直播;    Rice;    水稲;    Seedbed preparation;    播種前整地;    Seedling emergence;    出芽苗立ち;    Winter-puddling;    冬季代かき;   

DOI  :  10.1626/jcs.76.508

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

In Japan, no-till direct seeding of rice has been expected to reduce production cost, and thus many trials have been repeated. However, we pointed out that it has problems for practical use such as low seedling emergence rate, bird attack on seed or seedling and difficulty with weed control due to rough field surface and crop residue derived from the previous cropping. Therefore, this study aimed to improve no-till direct seeding by applying the winter puddling (WP) as a land preparation method prior to seeding, which may help solve those problems. WP has been practiced by local farmers in Anjo, Aichi, for leveling the field switched from upland to paddy field. Almost all the trials in this study were conducted in farmers'fields. Results showed that seedling emergence was improved, seedling stand number was increased, the bird attacks were substantially reduced and weeds were more easily controlled in WP sites as compared with the complete no-till sites. Furthermore, the soil of field surface of WP site became as hard as that of the complete no-till field, in which seeding was possible even right after rainfall. The seedling emergence number and the grain yield were not lower than those of conventional transplanting rice culture. These results clearly show that WP is very effective to stabilize the no-till rice culture and with this method, no-till direct seeding can be practically used in the farmers' fields.

【 授权许可】

Unknown