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晚播小麦在地膜覆盖栽培条件下，随播随盖适宜播期的日平均气温为９～１３℃，最高１４℃，越冬时０℃以上积温１７０～３４０℃，在当地时间为“霜降”节前后至“立冬”前。此期播种，每公顷基本苗１５０～２４０万。当日平均气温超过１４℃时，要先播种，降至８～９℃时再盖膜。当日平均气温降至０℃时也能播种。地膜覆盖栽培把小麦的适宜播期延长了一个多月，播种期延长了近２个月。
Under the plastic film mulching cultivation conditions, the average daily temperature of sowing date is 9 ~ 13 ℃, the maximum temperature is 14 ℃, and the accumulated temperature above 0 ℃ during winter is 170 ~ 340 ℃, and the local time is “frost” Before and after the “beginning of winter” before. Seeding this period, the basic seedlings per hectare 150 to 240 million. The average temperature of the day when more than 14 ℃, the first sowing, down to 8 ~ 9 ℃ and then cover the film. The average daily temperature dropped to 0 ℃ can also sow. Film mulching extends the suitable sowing date of wheat for more than one month and the sowing period lasts for nearly two months.