摘要
为客观掌握宁波市农田灌溉水有效利用现状,进一步提高节水灌溉水平,选取样点灌区通过自动化监测手段对典型作物典型田块进行监测,并采用首尾法对2017—2019年宁波市农田灌溉水有效利用系数进行测算。结果表明,2017—2019年宁波市农田灌溉水有效利用系数分别为0.596、0.604和0.612,呈逐年增长趋势;其中不同类型灌区的农田灌溉水有效利用系数排序为小型灌区>中型灌区>大型灌区,提水灌区>自流灌区;镇海区、宁海县、海曙区等区(县)农田灌溉水有效利用系数在全市处于较高水平。宁波市农田灌溉水有效利用系数仍有提升空间,应进一步推广自动监测并引导农户增强节水意识。
To understand the current status of the irrigation efficiency in Ningbo City and further improve the water-saving irrigation level,some sample irrigation districts were selected to monitor the typical crops and typical fields through automatic monitoring methods.The canal head-to-tail method was used to calculate the irrigation efficiency in Ningbo city from 2017 to 2019.The results show that the irrigation efficiency in Ningbo City from 2017 to 2019 is 0.596,0.604 and 0.612 respectively,showing a year-on-year increase trend.Among them,the irrigation efficiency of different types of irrigation districts is as following:small irrigation district>medium irrigation district>large irrigation district and water-lifting irrigation area>artesian irrigation area;Zhenhai District,Ninghai County andHaishu District have higher irrigation efficiency in Ningbo City.With the investment in water-saving irrigation projects,the adjustment of crop planting area and the promotion of water-saving irrigation technology,the irrigation efficiency in Ningbo city have increased year by year,but there is still some room for improvement.Automatic monitoring should be further promoted and farmers should be guided to increase their water-saving awareness.
作者
刘天
张倩妮
Liu Tian;Zhang Qianni
出处
《中国水利》
2020年第11期27-29,共3页
China Water Resources
关键词
农田灌溉水有效利用系数
样点灌区
首尾法
自动化监测
宁波
irrigation efficiency
sample irrigation district
canal head-to-tail water calculation method
automatic monitoring
Ningbo
