陇春40号是甘肃省农业科学院小麦研究所以陇春8139/陇春8号为母本、68-73-20为父本杂交，经系谱法选育而成的抗旱、丰产春小麦新品种。2016 — 2017 年参加甘肃省旱地春小麦区域试验，2 a 10 点(次)平均折合产量2 625.45 kg/hm2，较对照品种西旱2号增产10.39%。2018 年参加甘肃省旱地春小麦生产试验，5 试点平均折合产量为2 206.35 kg/hm2，较对照品种西旱2号增产23.09%。陇春40号属春性中早熟普通小麦，生育期 100 d，平均株高 87 cm，平均穗粒数24.5 粒，千粒重 43.79 g，容重 780 g/L。穗长方形，红粒角质。籽粒含粗蛋白(干基)156.4 g/kg、湿面筋352 g/kg，面团吸水率61.3 mL/100 g。抗病性强，抗旱、耐瘠薄，落黄好。适宜在甘肃中部旱地春麦类型区及生态类似地区种植。

Longchun 40 was a drought- resistant， high yield cultivar bred by Institute of Wheat， Gansu Academy of Agricultural Sciences， using hybridization method with multi-year individual plant pedigree selection， taking Longchun 8139/Longchun 8 as maternal plant and 68-73-20 as paternal plant. In 2016 — 2017， the average yield in 2 a 10 sites(times) is 2 625.45 kg/hm2， increased by 10.39% compared with the control cultivars Xihan 2 in Gansu Dryland Spring Wheat Regional Test. In 2018， the average yield of 5 plots is 2 206.35 kg/hm2， increased by 23.09% compared with the control cultivars Xihan 2 in Gansu Dryland Spring Wheat Production Test. The results showed that spike type rectangle， red grain cutin， the average plant height is 87 cm， growth period is 100 days. The average grain number per spike is 24.5， 1000-grain weight is 43.79 g， bulk density is 780.0 g/L. The result also indicated that the content of crude protein(dry basis)， wet gluten and water absorption are 156.4 g/kg，352 g/kg and 61.3 mL/100 g， respectively. Longchun 40 is resistance to stripe rust，drought and barren resistant， good yellow fall. It is suitable to be grown in the spring wheat type area on dry land in central Gansu Province and the same ecological environment.

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甘肃省重大科技专项计划项目(17ZD2NA016-7)；国家重点研发计划项目(2017YFD0