膜下滴灌水氮耦合对玉米水分产量的影响研究  

Research on Effect of Water-nitrogen Coupling on Maize Water Yield with Drip Irrigation under Plastic Film

作　　者：王文婷 贾丽炯 王多平 WANG Wenting;JIA Lijiong;WANG Duoping(Lanzhou Resources and Environment Voc-Tech University,Lanzhou 730021,China)

机构地区：[1]兰州资源环境职业技术大学,甘肃兰州730021

出　　处：《河南水利与南水北调》2022年第9期95-96,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：水资源短缺是农业可持续发展的重要挑战,也是导致土壤生产力降低,生态环境恶化的重要因素。为探究西北干旱灌区膜下滴灌玉米的最优灌溉定额和施肥水平组合,设置3个水分处理(T1、T2、T3)及3个氮肥处理(F1、F2、F3),开展不同灌溉量和施氮量对膜下滴灌玉米水分产量的研究。实验表明:灌水对于玉米产量的影响程度大于施肥,随着灌水量的增加,产量平均增加20.93%和15.50%。对于水分利用效率WUE,T2F1最小,T3F2最大。基于最小二乘法原理,建立了玉米产量与灌溉量及施肥量之间的回归模型,确定了理论的最优灌水施肥组合,为该地区玉米水肥管理提供理论依据和实践经验。Water shortage is an important challenge to the sustainable development of agriculture. It is also an important factor leading to the decrease of soil productivity and the deterioration of ecological environment. In order to explore the optimal combination of irrigation quota and fertilization level of maize under film drip irrigation in northwest arid irrigation area, three water treatments, including T1, T2 and T3, and three nitrogen fertilizer treatments, including F1, F2 and F3, were set up to study the effects of different irrigation and nitrogen application rates on the water yield of Maize under film drip irrigation. The experiment results showed that the effect of irrigation on maize yield was greater than that of fertilization. With the increase of irrigation amount, the yield increased by 20.93% and 15.50% on average. For Water Use Efficiency(WUE), T2F1 was the smallest and T3F2 was the largest. Based on the principle of least square method, the regression model between maize yield and irrigation and fertilization amount was established, and the theoretical optimal combination of irrigation and fertilization was determined, which provided theoretical basis and practical experience for maize water and fertilizer management in this area.

关 键 词：滴灌设计 水肥耦合 水分利用效率 玉米产量 

分 类 号：S566.3[农业科学—作物学]