摘要
在水资源十分紧缺的干旱地区,研究膜下滴灌技术,防止土壤产生盐渍化,对于缓解水资源的紧张状况,提高水土资源利用效率具有重要的理论和实际意义。通过两年大田定位试验研究了不同灌溉定额膜下滴灌春玉米农田水盐动态特征,春玉米产量及水分利用效率。研究表明,膜下滴灌灌水定额为430 m3/hm^2时,土壤水分在0~100cm土层分布均匀,不会产生深层渗漏。连续两年的膜下滴灌能保证土壤耕作层处于良好的水盐环境,不会产生土壤盐分表层累积,但盐分累积区域有向土壤表层扩展的趋势。两年的春玉米产量及水分利用效率差异不显著。T2处理是膜下滴灌灌溉条件下最优的春玉米灌溉制度。
In arid areas with shortage water resources, studying mulch drip irrigation technology to prevent soil salinization has important theoretical and practical significance to ease the tension of water resources and to improve the water resources utilization efficiency. In this paper, the dynamic characteristics of water and salt in spring maize field under different irrigation quota were studied through a two-years fieht experiment, the yield and water use efficiency of spring maize were also studied. The results showed that when the irrigation quota was 430 m^3/hm^2, the distribution of soil moisture in the 0- 100 cm soil layer was uniform and no deep percolation appeared. For the two consecutive years, mulch drip irrigation could ensure that the soil layer was under good water and salt environment, and the surface accumulation of soil salinity would not be caused. The difference of yield and water use efficiency of Spring Maize in the two years was not significant. The T2 treatment was the best irrigation system for the Maize under the condition of mulch drip irrigation.
作者
杨宏伟
杨正华
张富仓
李思恩
YANG Hong-wei YANG Zheng-hua ZHANG Fu-cang L(The Water Resources Department of Gansu Province in Basin Management Bureau of Shiyang River, Wuwei 733000, Gansu Provinee, China Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A＆F University, Yangling 712100, Shaanxi Province, China China Agricultural Water Research Center, Beijing 100083, China)
出处
《节水灌溉》
北大核心
2017年第7期20-27,共8页
Water Saving Irrigation
基金
水利部公益性行业科研专项经费项目(201501017)
关键词
膜下滴灌
土壤水分
土壤盐分
春玉米
灌溉定额
drip irrigation under mulch
soil moisture
soil salinity
spring maize
irrigation quota
作者简介
杨宏伟（1981-），男，硕士研究生，从事节水灌溉理论与技术研究、工程建设管理以及质量安全管理方面的工作。E-mail：yanghonwei19810414@163．com。
通讯作者：杨正华（1963-），男，硕士研究生，从事流域管理管理工作。E-mail：948350811@qq．com。
