研究了毛管不同铺设方式下，滴头流量对田间灌水均匀度、玉米出苗率、产量、水分利用效率、经济效益等指标的影响。结果表明，滴头流量越小，灌水均匀度越好，作物出苗率越高，水分利用效率相对较高，对作物生长及产量形成有积极作用。一膜两管(滴灌带间距60 cm)较一膜三管(滴灌带间距40 cm)可节约滴灌带材料30%以上。低压滴灌在适当滴头流量(2.0 L/h)及毛管铺设模式(毛管间距60 cm)下不仅能提高产量，而且净收入也明显提高。

The effects of different drip head flows on the uniformity of field irrigation water， maize seedling emergence rate， yield， water use efficiency and economic benefits were analyzed. The results showed that the smaller the drip flow， the better the uniformity of irrigation， the higher the seedling emergence rate， the higher the water use efficiency， and the positive effect on crop growth and yield formation. One film and two tubes (with 60 cm spacing between drip irrigation belts) can save more than 30% of materials of drip irrigation belts compared with three tubes (with 40 cm spacing between drip irrigation belts). Low pressure drip irrigation can not only improve the yield， but also increase the net income under appropriate drip head flow(2.0 L/h) and capillary laying mode (capillary spacing 60 cm).

S275.3；S513

甘肃省水利科研与推广计划项目。