文章摘要
贾琼, 史海滨, 李瑞平, 冯亚阳, 王宁, 李经纬.西辽河平原覆膜和浅埋对滴灌玉米生长的影响[J].水土保持学报,2021,35(3):296~303,311
西辽河平原覆膜和浅埋对滴灌玉米生长的影响
Effects of Mulched and Soil Covered Drip Irrigation on Growth of Maize in West Liaohe Plain
投稿时间:2020-11-24  
DOI:10.13870/j.cnki.stbcxb.2021.03.041
中文关键词: 膜下滴灌  浅埋滴灌  玉米  根系分布  水分生产率
英文关键词: mulched drip irrigation  soil covered drip irrigation  maize  root distribution  water use efficiency
基金项目:十二五国家科技支撑计划项目(2014BAD12B03);国家自然科学基金项目(51539005)
作者单位E-mail
贾琼1, 史海滨1, 李瑞平1, 冯亚阳1, 王宁2, 李经纬2 1. 内蒙古农业大学水利与土木建筑工程学院, 呼和浩特 010018

2. 内蒙古自治区水利科学研究院
, 呼和浩特 010051 
shi_haibin@sohu.com 
摘要点击次数: 27
全文下载次数: 43
中文摘要:
      为对比研究覆膜和浅埋对滴灌玉米生长的影响,以西辽河平原为研究区,设置膜下滴灌与浅埋滴灌2种灌溉方式和高、中、低3种灌溉水平,对滴灌玉米生长指标、根系分布、耗水量及产量等进行分析,寻求适宜试验区玉米高效节水灌溉模式。结果表明:(1)平均叶面积指数膜下滴灌较浅埋滴灌处理高13%~20%。膜下滴灌根系在30 cm土层内分布均匀,浅埋滴灌根系分布较膜下滴灌深10 cm。(2)膜下滴灌总耗水量较浅埋滴灌低9%,节水效果明显。(3)平水偏枯年膜下滴灌处理产量高于浅埋滴灌7%~15%,平水偏丰年膜下滴灌处理的产量低于浅埋滴灌处理6%~19%(p<0.05)。(4)中水处理产量高,水分生产率最大,为最佳灌水处理。(5)对不同研究区通过多年平均降雨量和当年降雨预报推算生育期降雨量,对于<268.32 mm的地方推荐使用膜下滴灌更佳,灌溉定额为186.1 mm,灌水7次。降雨量>268.32 mm的地方推荐使用浅埋滴灌更佳,灌溉定额为228.0 mm,灌水8次。研究结果可为试验区及类似地区玉米高效灌溉生产提供理论依据。
英文摘要:
      In order to compare the effects of mulch and soil covered drip irrigation on the growth of maize, three irrigation levels of high, medium and low were carried out to analyze the growth index, root distribution, water consumption and yield of maize. The results showed that the average leaf area index of mulched drip irrigation was 13%~20% higher than that of soil covered drip irrigation. The root of mulched drip irrigation evenly distributed in the top 30 cm soil layer. The root of soil covered drip irrigation was 10 cm deeper than that of mulched drip irrigation. The total water consumption of mulched drip irrigation was 9% lower than that of soil covered drip irrigation, which was obvious for water saving. The yield of mulched drip irrigation was 7%~15% higher than that of soil covered drip irrigation in the normal and dry year. The yield of mulched drip irrigation was 6%~19% lower than that of soil covered drip irrigation in the normal and wet year (p < 0.05). Medium irrigation treatment with the highest yield and water productivity was the best irrigation scheduling. For different study areas, the annual average precipitation and the annual precipitation forecast were used to calculate the precipitation in the growing period. When annual precipitation was less than 268.32 mm, it was better to use mulched drip irrigation with 186.1 mm of irrigation quota and 7 times; while soil covered drip irrigation for more than 268.32 mm with 228.0 mm of irrigation quota and 8 times. The results could provide a theoretical basis for high-efficiency irrigation of drip irrigation of maize in the study area and similar areas.
查看全文   查看/发表评论  下载PDF阅读器
关闭