越冬期麦田受霜冻后,形成弱苗,给小麦均衡增产带来困难。因此,加强麦田霜冻的防御,是小麦取得丰收的关键。一、霜冻的受害程度与下列因素有关1.气候。冬季寒流低温来得越早,或春季低温霜冻发生的越迟,遭受冻害也就越严重。2.品种和播期。小麦冬性品种受害较轻,半冬性品种稍重, Winter wheat field frost, the formation of weak seedlings, wheat yield a balanced increase difficult. Therefore, strengthening wheat field frost defense is the key to wheat harvest. First, the degree of frost damage and the following factors 1. Climate. The earlier the winter cold flow comes, or the later the spring frost occurs, the more severe the frost damage. 2 species and sowing date. Winter wheat varieties suffer less damage, slightly heavier semi-winter varieties,