@article{oai:iwate-u.repo.nii.ac.jp:00009207,
 author = {佐藤, 太郎 and 東, 淳樹},
 issue = {別冊},
 journal = {農村計画学会誌},
 month = {Nov},
 note = {This study aimed to clarify that status of spot billed duck damage to direct seeding in submerged paddy field in the Tohoku District 
by questionnaire survey to farmer. As a results, damage by Spot billed duck tended to grow, as it was frequently seen around the paddy field.However, It was clarified that the population of the Spot billed duck and its damage situations were diffrent according to the region. Therefore, It is hoped to understand the damage situations by Spot billed duck in each region, and to
introduce the direct seeding in submerged paddy field that suits those situations.},
 pages = {13--18},
 title = {東北地方の湛水直播栽培農家へのアンケート調査によるカルガモ被害の実態解析},
 volume = {22},
 year = {2003}
}