广西农业灌溉用水定额修订方法  

Revision Methods for Guangxi Agricultural Irrigation Water Quota

作　　者：苏冬源 何令祖 莫明珠 刘宗强 SU Dong-yuan;HE Ling-zu;MO Ming-zhu;LIU Zong-qiang(Guangxi Water Conservancy Research Institute,Nanning 530023,Guangxi,China;Key Laboratory of Water Engineering Materials and Structures in Guangxi,Nanning 530023,Guangxi,)

机构地区：[1]广西水利科学研究院,广西南宁530023 [2]广西水工程材料与结构重点实验室,广西南宁530023

出　　处：《节水灌溉》2025年第3期100-104,112,共6页Water Saving Irrigation

基　　金：广西重点研发计划项目(桂科AB23026021)。

摘　　要：为提高农业灌溉用水定额合理性和实用性,在总结广西现行农业灌溉用水定额(2019年版)存在问题基础上,结合国家定额及相关规程规范的新要求开展广西农业灌溉用水定额修订,综合考虑自然条件、用水条件、工程条件、田间措施构建用水定额指标框架,补充20种农作物种类,局部调整定额分区,新增75%水文年型,调整用水定额统计界面位置;分析研究灌溉试验站、灌溉水有效利用系数测算的作物长系列灌溉用水规律以及各分区综合单位灌溉面积用水水平差异,提出不同水文年型、不同分区的净灌溉用水定额比例系数,提出不同分区规定位置以下灌溉水有效利用系数并在此基础上分级制定60种主要作物的灌溉用水定额先进值、通用值,建立了规定位置处与渠首、田间的灌溉用水定额换算通道,为计量设施配套不全、数据资料缺乏地区开展灌溉用水定额制定提供了方法借鉴。评估修订后用水定额在覆盖性、合理性、实用性、先进性等方面均有提升,同时提出了进一步完善用水定额修订方法的建议。In order to improve the rationality and practicality of agricultural irrigation water quotas,based on the limitations of the current quotas(Guangxi 2019 version),combined with the latest national quotas and relevant regulations,the Guangxi agricultural irrigation water quotas revision has been carried out.The natural conditions,water use conditions,engineering facilities and field measures have been considered to construct the water quotas framework.In the revision,20 new crop types were added,the quotas zoning was partially adjusted,also,a 75%hydrological year type was appended,and the statistical interface position of water quotas was modified.Through studying the long-term irrigation water use patterns of crops at various irrigation stations and the effective utilization coefficient of irrigation water data,as well as the water use per unit irrigated area in each region,the proportional coefficient of irrigation water quotas for different hydrological years and different regions was proposed.Effective utilization coefficients of irrigation water below designated locations in different zones were proposed.Based on this,advanced and standard values for agricultural irrigation water quotas for 60 major crops were formulated.At the same time,the conversion of the quotas between the specified location and the head of the canal and the field was established,which provides a method for calculating quotas in areas with incomplete measurement and lack of data.The revised water quotas were improved in terms of coverage,rationality,practicality,and progressiveness.Recommendations for further improving the methods for revising water quotas are also provided.

关 键 词：农业 灌溉用水定额 修订方法 广西 

分 类 号：S27[农业科学—农业水土工程] TV93[农业科学—农业工程]