以春小麦定丰18号为指示品种，在定西市进行了不同栽培方式对春小麦产量和品质的影响试验。结果表明，2017、2018年，不同栽培方式对小麦产量、单位面积穗数、穗粒数、千粒重的影响由大到小均表现为全膜覆土穴播、传统地膜覆盖穴播、露地穴播。其中全膜覆土穴播较传统地膜覆盖穴播、露地穴播处理的春小麦产量显著增加了29.08%～131.56%；单位面积穗粒数增加了14.4%～27.54%。不同栽培方式的春小麦粗蛋白含量、湿面筋含量、容重、沉降值由大到小均表现为全膜覆土穴播、传统地膜覆盖穴播、露地穴播。与露地穴播处理相比，全膜覆土穴播处理的春小麦粗蛋白含量比2017年显著增加了6.02%；湿面筋含量比2018年显著增加了6.15%；沉降值2017、2018年分别显著增加了26.8%、9.94%。因此，黄土高原半干旱区全膜覆土穴播种植模式能够提高小麦产量和品质，是一种适宜该地区的小麦栽培技术。

With spring wheat Dingfeng 18 as the indicator crop， the effects of different cultivation methods on yield and quality of spring wheat in Dingxi City were studied. In 2017 — 2018， the effects of different cultivation method on wheat yield， number of spikes， spike grain number and 1000-grain weight varied from large to small， such as the whole field soil-plastic mulching， whole plastic-film mulching and open-ground. Compared with whole plastic-film mulching treatments and open-ground treatments， the whole field soil-plastic mulching treatments significantly increased the yield of wheat and number of spikes， the yield increased by 29.08%~131.56% and number of spikes increased by 14.40%~27.54%. The crude protein content， wet gluten content， bulk density and sedimentation value of spring wheat in different cultivation methods varied from large to small， were shown as follows: the whole field soil-plastic mulching treatments， whole plastic-film mulching treatments， and open-ground treatments. Compared with open-ground treatments， crude protein content of the whole field soil-plastic mulching treatments increased significantly by 6.02% in 2017， the wet gluten content increased significantly by 6.15% in 2018 and the sedimentation value increased significantly by 26.8% and 9.94% respectively in 2017 — 2018. Therefore， the whole field soil-plastic mulching planting mode can improve yield and quality of wheat in the semi-arid region of the Loess Plateau， which is a suitable wheat cultivation technique in the region.

S512.1

国家重点研发项目(2018YFD0200403)； 国家自然科学基金(31460547)； 公益性行业(农业)科研专项(201503120)； 甘肃省农业科学院科技创新专项计划(2016GAAS22)、 (2017GAAS28)。