作物学报Issue(8)：1279-1286,8.DOI:10.3724/SP.J.1006.2015.01279
苗期不同滴灌方式对东北春玉米产量和水分利用效率的影响
Effects of Different Drip-Irrigation Modes at the Seedling Stage on Yield and Water-Use Efficiency of Spring Maize in Northeast China
摘要
Abstract
The seasonal drought especially in spring is one of the major obstacle factors for yield improvement in maize produc-tion in Northeast China. Drip irrigation could effectively alleviate drought while different drip irrigation strategies have different impacts. Using rainfed maize as a control (CK), we compared the effects of traditional drip irrigation (using the embedded laby-rinth drip irrigation tube, TDI) and new drip irrigation (using the new drip irrigation tube, NDI) together with three depths of tube (0 cm, 5 cm, and 10 cm) on maize growth, yield, and water use. Compared with CK, irrigation treatments significantly increased grain yield by 9.5%–20.1%. For TDI, no significant yield difference was observed among three tube depths. For NDI, grain yield in treatment with 5 cm tube depth was 4.4% higher than that with 0 cm tube depth. At the same tube depth between TDI and NDI, no significant yield difference was observed with an exception of NDI with 5 cm tube depth, which increased yield by 8.8%. Compared with CK, yield increase with irrigation mainly resulted from the improvement of emergence rate, which was increased by 12%. The ear number per ha was improved by 13%. The higher yield in NDI with 5 cm tube depth was because of the delayed leaf senescence and higher total dry matter accumulation. Compared with CK, irrigation improved water use efficiency by 8.1%–10.9%, with the highest in NDI with 5 cm tube depth. Therefore, using NDI with 5 cm tube depth could be an effective strategy to increase both yield and water use efficiency of spring maize in Northeast China.关键词
春旱/滴灌/埋深/产量/水分利用效率Key words
Spring drought/Drip irrigation/Dripline depth/Yield/Water use efficiency引用本文复制引用
徐杰,李从锋,孟庆锋,葛均筑,王璞,赵明..苗期不同滴灌方式对东北春玉米产量和水分利用效率的影响[J].作物学报,2015,(8):1279-1286,8.基金项目
本研究由国家“十二五”科技支撑计划项目(2013BAD07B04,2011BAD16B14)和国家现代农业产业技术体系建设专项(NYCYTX-02)资助。 （2013BAD07B04,2011BAD16B14）
