半干旱区玉米膜下滴灌适宜水分生产函数模型研究  

Study on Water Product Function for Maize under Drip Irrigation under Film in the Semi-arid Region

作　　者：司昌亮[1] 尚学灵 王旭立[1] 张生武[1] 于海荣[1] SI Chang-liang;SHANG Xue-ling;WANG Xu-li;ZHANG Sheng-wu;YU Hai-rong(Jilin Province Hydraulic Research Institute,Changchun 130022,China)

机构地区：[1]吉林省水利科学研究院,长春130022

出　　处：《节水灌溉》2020年第1期39-44,48,共7页Water Saving Irrigation

基　　金：国家重点研发计划课题“旱田高效节水灌溉技术集成应用”(2016YFC0400109);国家科技支撑计划课题“吉林西部节水增粮高效灌溉技术集成研究与规模化示范”(2014BAD12B02)。

摘　　要：为合理制定吉林省半干旱区玉米膜下滴灌条件下的优化灌溉制度,有效指导分生育阶段灌溉,以提高吉林省粮食产量,在吉林省半干旱地区选择具有典型区域代表性的通榆灌溉试验重点站为研究对象,利用重点站2018年度玉米膜下滴灌非充分灌溉试验数据,对Jensen、Minhas、Blank、Stewart、Singh等5种水分生产函数模型进行求解,得出各模型敏感指数(系数)。与其他水分生产函数相比,Stewart水分生产函数模型各生育阶段敏感系数呈前期和后期较小、中期较大的“单峰式”变化规律,分别为0.1108(苗期)、0.3530(拔节期)、0.5158(抽雄吐丝期)、0.3122(灌浆期)、0.2873(乳熟期),抽雄吐丝期的敏感系数最大。分析结果表明:Stewart水分生产函数模型在当地具有较好的适应性,可用于吉林省半干旱区玉米膜下滴灌优化灌溉制度的制定,同时抽雄吐丝期为玉米膜下滴灌的需水关键期。In order to rationally formulate the optimal irrigation schedule for maize under drip irrigation under film in the semi-arid area of Jilin Province,and effectively guide the irrigation in the growing stage,so as to improve the grain yield in Jilin Province,in the semi-arid region of Jilin province,the Tongyu key irrigation test station,which is the representative of typical regions,was selected as the research subject,and the non-sufficient irrigation test data of 2018 of maize under drip irrigation under film was used to solve the five water production function models,including Jensen,Minhas,Blank,Stewart and Singh,and the sensitivity index(coefficient)of each model was obtained.Compared with other water production functions,the sensitivity index of Stewar water production function model showed a“single-peak”variation,namely smaller in early and late stages while larger in medium-term,which was 0.1108(seedling stage),0.3530(jointing stage),0.5158(tasseling-silking stage),0.3122(filling stage)and 0.2873(milk stage),respectively.The sensitivity index of the tasseling-silking stage was the largest.The analysis results showed that the Stewart water production function model had good adaptability in the local area,and could be used in the formulation of optimal irrigation schedule for maize under drip irrigation under film in semi-arid area of Jilin province.

关 键 词：半干旱区 非充分灌溉试验 水分生产函数 敏感指数(系数) 

分 类 号：S274.1[农业科学—农业水土工程]