小麦生长后期(一般是指从抽穗到成熟)根系吸收能力已逐渐衰退,可植株的上部叶片还进行旺盛的光合作用,物质合成与转化过程十分活跃,仍需要充足的营养物质,所以,此期要保持根系的正常生理机能,延长上部叶片的功能期,提高光合效率,以水养根,以根护叶,促进灌浆,实现粒多、粒重,从而提高产量。一、浇好扬花水、灌浆水小麦籽粒形成期间,对水分的要求十分迫切,水分不足,导致籽粒退化,降低穗粒数,因此要及时浇好扬花水。小麦扬花以后至多半仁开始,就进入灌浆阶段,进入灌浆以后,根系逐渐衰退,对环境条件适应能力减弱,要求有较平稳的地温和适宜的水气比例,土壤水分以田间最大持 The late stage of wheat growth (usually from heading to maturity) root absorption capacity has gradually declined, plant upper leaves also exuberant photosynthesis, material synthesis and transformation process is very active, still need adequate nutrients, therefore, this period To maintain the normal physiological function of the root system, to extend the functional period of the upper leaves, improve photosynthetic efficiency, with water and root, root guard leaves, and promote grouting, to achieve more grain, grain weight, thereby increasing yield. First, pouring flowering water, grouting water During the formation of wheat grains, the water is very urgent requirements, lack of water, leading to grain degradation, reducing the number of grains per spike, so timely pouring flowering water. Wheat flowering after most of half-kernel began to enter the filling stage, into the grouting, the root system gradually declining, the adaptability to environmental conditions weakened, require a more stable ground temperature and the appropriate proportion of water vapor, the maximum soil moisture in the field