摘要
为探索云南高原山区农田灌溉水有效利用系数测算方法,科学评估农田灌溉用水效率,以昭通永善县为研究区,选取2个样点灌区、15个典型田块开展农田灌溉水有效利用系数测算分析。采用实测法和调查分析法计算了样点灌区净灌溉水量,通过首尾测算分析法得到样点灌区农田灌溉水有效利用系数,进而计算出2018—2020年永善县农田灌溉水有效利用系数。结果表明:(1)2018—2020年永善县样点灌区净灌溉水量整体呈下降趋势;花椒、砂仁、柑橘、烤烟、马铃薯的净灌溉水量呈现出依次减少的趋势;(2)样点灌区农田灌溉水有效利用系数呈现出中型灌区大于小型灌区的趋势;(3)2018—2020年永善县农田灌溉水有效利用系数呈逐年增加趋势,分别为0.489 2、0.502 0、0.508 5,研究成果合理、可靠,能够较为真实地反映灌区的实际情况。
To explore the calculation method of effective utilization coefficient of farmland irrigation water in the mountainous area of Yunnan Plateau, we scientifically evaluated the efficiency of farmland irrigation water.Taking Yongshan County of Zhaotong City, Yunnan Province as the research area, we selected 2 sample irrigation districts and 15 typical fields to calculated and analyze the effective utilization coefficient of farmland irrigation water.The net irrigation water of sample irrigation districts was calculated after measurement and investigation.Head-end measurement was used to calculate and analyze the effective utilization coefficient of farmland irrigation water in the sample irrigation districts, and then the coefficient of Yongshan County from 2018 to 2020 was calculated.The results show the followings.(1) The net irrigation water in the sample irrigation districts of Yongshan County exhibited a downward trend from 2018 to 2020 overall.The net irrigation water for Zanthoxylum bungeanum,Amomum villosum,Citrus reticulata,flue-cured tobacco and Solanum tuberosum in Yongshan County decreased successively.(2) The effective utilization coefficient of farmland irrigation water was larger in the medium-sized irrigation district than in the small irrigation district.(3) The effective utilization coefficient of farmland irrigation water in Yongshan County was increased gradually from 2018 to 2020,i.e.,0.489 2,0.502 0 and 0.508 5,respectively.The research results are reasonable and reliable, which can reflect the actual situation in the irrigation districts.
作者
曹言
李尤亮
王树鹏
张雷
周筱妍
王杰
韩玲
CAO Yan;LI Youliang;WANG Shupeng;ZHANG Lei;ZHOU Xiaoyan;WANG Jie;HAN Ling(Yunnan Institute of Water Resources and Hydropower Research,Kunming 650228,China;Yongshan County Expert Grass-roots Research Workstation,Zhaotong 657300,China;Yongshan Water Bureau,Zhaotong 657300,China)
出处
《人民珠江》
2022年第3期23-29,44,共8页
Pearl River
基金
云南省科技厅科技人才与平台计划项目(202005AM070024)
永善县水务局项目(2018530117000851)。
关键词
灌溉水有效利用系数
净灌溉水量
样点灌区
典型田块
effective utilization coefficient of irrigation water
net irrigation water
sample irrigation district
typical field
