西北干旱地区春小麦亏缺灌溉及种植模式研究

Research on Deficit Irrigation and Cropping Pattern of Spring Wheat in Arid Area of Northwest

研究了春小麦亏缺灌溉及种植模式对产量、水分利用效率及灌溉效益的影响。结果表明,全膜覆盖穴播与秸秆覆盖条播和露地条播相比,亏缺灌溉时全膜覆盖延长灌浆期和生育期,充分灌溉时延长灌浆期、缩短生育期,使小麦较充分灌浆,产量显著提高。灌水量为3 600m3/hm2且全膜覆盖穴播种植模式效果最好。

rigation opment Under s shorten ~ The influences of deficit irrigation and cropping pattern on crop yield, water use efficiency and it- efficiency of spring wheat were studied. The results indicated that the grain-filling stage and devel- stage could be prolonged with the whole plastic-film mulching technology under deficit irrigation. ufficient irrigation, the grain-filling stage could be prolonged, but the development stage could be using the whole plastic-[ilm mulching technology, and crop yield could evidently increase. It was recommended that the irrigation amount of 3 600 m3/hm2 and the cropping pattern of holding seeding tech nology covered with whole plastic-film mulching at the same time should be applied in study area.