半旱式种麦,是小麦增产措施之一,目前规模较大。但这种种植法与常规种麦相比,其所处生态环境、土壤理化性质均发生了根本的变化,如仍按常规施肥法,会造成高湿环境下肥分、特别是氮肥的流失,使小麦后期脱肥,产量下降。因此研究半旱式种麦氮肥配施量也就成为当务之急。一、试验基本情况供试品种:蜀万40号。小麦全 Semi-arid wheat is one of the measures to increase wheat yield and is currently in a larger scale. However, compared with the conventional wheat growing method, the ecological environment and soil physical and chemical properties of this planting method have undergone fundamental changes. If the conventional fertilization method is still used, the loss of fertilizer, especially nitrogen fertilizer, Post-harvest wheat to reduce output. Therefore, the study of semi-dry wheat germplasm fertilizer application volume has become a top priority. First, the basic conditions for the test Variety: Shuma 40. Wheat whole