辽西地区膜下滴灌不同灌水下限对谷子生长和产量的影响  

Effects of Different Irrigation Lower Limits of Drip Irrigation on Growth and Yield of Cereals in Western Liaoning Region

作　　者：于秀琴 李颖[2] 孙翔龙 闫淼宇 杨宁[3] 冯良山[2] YU Xiu-qin(Jianping County Irrigation New Technology Test and Popularization Station,Jianping,Liaoning 122405)

机构地区：[1]建平县灌溉新技术试验推广站,辽宁建平122405 [2]辽宁省农业科学院/农业农村部东北节水农业重点实验室,辽宁沈阳110161 [3]沈阳农业大学,辽宁沈阳110866

出　　处：《园艺与种苗》2023年第9期88-90,110,共4页Horticulture & Seed

基　　金：辽宁省应用基础研究(2022JH2/101300159);辽宁省自然科学基金课题(2022-MS-055);沈阳市黑土保护专项(22-317-2-04)。

摘　　要：[目的]科学开展灌溉管理,确定谷子膜下滴灌控水下限。[方法]采用田间试验的方法,灌水控制下限设置2个水平,轻度控制灌溉(QK)和重度控制灌溉(ZK),并以雨养处理(YY)为对照。[结果]轻度控制灌溉的生长性状、产量及产量因子最优,产量达7650 kg/hm^(2),全生育期需水量为367.86 mm,灌溉水分生产率最高,为14.9 kg/m^(3)。苗期土壤含水率下限控制指标应占田间持水量的65%,拔节至灌浆期为70%,成熟期为60%。[结论]综合考虑生长性状、灌溉水利用效率和产量,轻度控制灌溉比较适宜于辽西旱作区推广。[Objective]The aim was to determine the lower limit of water control of drip irrigation under membrane for cereals.[Method]Adopting the method of field experiment,the lower limit of irrigation control was set at two levels,light control irrigation(QK)and heavy control irrigation(ZK),and the rainfed treatment(YY)was used as control.[Result]Lightly controlled irrigation had the best growth traits,yield and yield factor,with a yield of 7650 kg/hm^(2),which had a full-life water requirement of 367.86 mm,and the highest irrigation water productivity of 14.9 kg/m^(3).The lower limit of soil water content control should be 65%of the water holding capacity of the field in the seedling stage,70%from the pulling to filling stage,and 60%in the maturity stage.[Conclusion]Considering growth traits,irrigation water utilization efficiency and yield,lightly controlled irrigation was more suitable for popularization in the dry farming area of western Liaoning.

关 键 词：节水补灌 谷子 水分利用率 产量 辽西北地区 

分 类 号：S515[农业科学—作物学]