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通过6 a的试验,分别研究了在一般干旱年份(年降雨量超过360 mm)和较严重干旱年份(降雨量低于360 mm),小麦品种(79121-15与定西24)、耕作方式(垄作与平作)及补充灌溉等农艺技术组合对产量的影响。在一般干旱年份,79121-15的产量比定西24的高,并且它们的产量在垄作种植下比平作种植下有显著提高。在严重干旱年份,定西24的产量比79121-15高。无论在一般干旱年份还是严重干旱年份,补充灌溉能够显著提高小麦产量。通过不同品种与耕种方式,以及补充灌溉等农艺技术的组合,可以显著提高小麦产量。在一般干旱年份,组合品种、垄作和补充灌溉等技术措施,79121-15对产量的贡献率与定西24的相比较被提高了7.3%～9.9%。垄作较平作对产量的贡献率提高了9.3%～13.3%。补充灌溉对产量贡献率提高了17.7%～30.0%。但是,在严重干旱年份,组合品种、垄作和补充灌溉的情况下,补充灌溉提高小麦产量25.1%～35.5%,垄作和品种可适度提高小麦产量。
Through 6 years of experiment, we studied the effects of tillage (ridge type) on wheat varieties (79121-15 and Dingxi 24) in arid year (annual rainfall more than 360 mm) and severe drought years (rainfall less than 360 mm) And flat-cropping) and supplementary irrigation and other agronomic techniques on the yield. During the general drought years, the yield of 79121-15 was higher than that of Dingxi 24, and their yield was significantly increased under ridge cultivation compared with that under flat-cropping. In severe drought year, Dingxi 24 output is higher than 79121-15. Supplemental irrigation can significantly increase wheat yields both in normal and severe drought years. Wheat production can be significantly increased through a combination of different varieties and cultivation methods, as well as agronomic techniques such as supplementary irrigation. During the general drought years, combining the technical measures of combination variety, ridge planting and supplementary irrigation, the contribution rate of 79121-15 to the yield was increased by 7.3% ~ 9.9% compared with that of Dingxi 24. The contribution of ridge-to-ridge production to yield increased by 9.3% ~ 13.3%. The contribution of supplementary irrigation to yield increased by 17.7% ~ 30.0%. However, under severe dry years, combination varieties, ridge planting and supplementary irrigation, supplementary irrigation increased the yield of wheat by 25.1% -35.5%. Ridges and varieties could moderately increase the wheat yield.