小麦从抽穗到成熟称为后期生育阶段。该阶段包括抽穗、开花、籽粒形成与灌浆等生育过程,历时40天左右。这是小麦产量形成的最后时期。黄淮麦区该阶段一般从四月下旬到六月上旬,此期常有高温、干旱、风、雨、寡照等灾害性天气,并有多种病虫害发生,往往会造成小麦穗粒减少、千粒重下降。因此,掌握小麦后期生育特点,采取针时性措施,加强麦田后期管理,减轻各种不利因素的危害,是争取小麦高产稳产的关键。 Wheat from heading to maturity known as the late stage of fertility. This stage includes the breeding process of heading, flowering, grain formation and grain filling, which takes about 40 days. This is the last period of wheat production. Huanghuai wheat This stage is generally from late April to early June, this period often have high temperatures, drought, wind, rain, and other disastrous weather, and a variety of pests and diseases, often resulting in reduced wheat spikelets, 1000-grain weight decline. Therefore, grasping the characteristics of late-stage wheat and adopting timely measures to strengthen late management of wheat fields and mitigate the harmfulness of various unfavorable factors is the key to striving for a high and stable yield of wheat.