Effective Water Management of Irrigation and Drainage of Paddy Fields in Cold Northern Japan

日本寒冷北部稻田灌溉和排水的有效水管理

• 批准号: 58860034
• 负责人: KATAOKA Takashi
• 金额: $ 4.74万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1983
• 资助国家: 日本
• 起止时间: 1983 至 1985
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-58860034/
• 关键词: Water Management; Irrigation Requirement; Farm Land Consolidation; Irrigation Water Temperature; Irrigation Efficiency; Drainage; Inside Water Level; 外水位

The water requirement in paddy fields has become varied and complex these days. This research was performed for the effective water management of irrigation and drainage of paddy fields in Tohoku and Hokkaido district. The results of the three given subjects are as follows.1. Effective Managemant of the Facilities for Water Supply in the Situation of Declining Acreage Farmed.(1) According to opinionaire, rice transplanting is finished in more than 80% of the total paddy fields at the last day of the period of puddling water. Water level in the period of deep ponding irrigation is much lower than expected.(2) The open canal shoud be used more effectively, to shorten the time required for irrigation in both the puddling water and deep ponding irrigation periods and to change the continuous flow irrigation to the intermittent one at the other times.(3) Based on the ideal water temperature of paddy field, the open canal and water warming pond, we calculated the water temperature of both co … More ntinuous and intermittent flow irrigation at each time of the day. We indicated the advantage of the intermittent flow irrigation and indicated the ideal duration and the starting time of intermittent flow irrigation.2. Utilizing Structure and Effective Use of Cool Water Irrigation in Paddy Fields Area. In order to clarify the change of water utilization caused by the farm land consolidation, a questionnaire was carried out on the three mountain villages of North Tohoku district, in which the paddy fields had been suffering every year from damage caused by cool water temperature.As a result of investigating many data, it was shown that the water utilization on paddy fields was improved from a flowing irrigation to a intermittent irrigation, therefore cool summer damage and cool water damage in this paddy field land decreased remarkably for the reason of water temperature rise in paddy field.3. Effects on Internal Drainage of the Existing Drainage Network with the Conversion from Paddy Field to Upland FieldThe internal disasters are examined and the precipitation is estimated, based on hydrological statistics, and the ponding analysis of runoff is calculated during the strm rainfall in August, 1975 and 1981, especially in Kitamura and Yubaributo regions. Less

目前，水田的需水量已变得复杂多变。本研究为东北和北海道地区水田灌溉排水的有效水管理而进行。三个给定科目的结果如下：1。耕地面积减少情况下供水设施的有效管理。(1)根据民意调查，在灌水期的最后一天，超过80%的稻田完成了插秧。深池灌溉期的水位远低于预期。(2)应更有效地利用明渠，在灌水期和深灌水期均缩短灌溉时间，其他时间由连续灌溉改为间歇灌溉。(3)以水田、明渠和暖水塘的理想水温为基础，分别计算了水田、明渠和暖水塘每天各时段的连续流和间歇流灌溉的水温。我们指出了间歇流灌的优势，并指出了间歇流灌的理想持续时间和开始时间。水田凉水灌溉的利用结构与有效利用为了弄清农地整理导致的水资源利用变化，对东北北部地区稻田每年都遭受低温破坏的三个山村进行了问卷调查。通过对大量资料的调查研究表明，水田的水分利用由流水灌溉提高到间歇灌溉，由于水田水温升高，该水田的夏冷害和冷水害显著减少。短句来源本文根据水文统计资料，对1975年8月和1981年8月的暴雨，特别是北村和夕客户地区的暴雨，进行了内涝灾害调查和降水估算，并计算了径流的积水分析。少

项目成果

Agriculture and Horticulture. 60-9. (1985)

农业和园艺。

北海道大学農学部特定研究報告書. (1985)

北海道大学农学部具体研究报告（1985）。

苫小牧工業高等専門学校紀要. 20. (1985)

苫小牧国立工业大学公报 20. (1985)

農業および園芸. 60-9. (1985)

农业和园艺。60-9。

Special Project Research of the Agriculture Hokkaido University. (1985)

北海道农业大学特别项目研究。