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覆膜小麦，播种至出苗期，0－5厘米耕作层温度增加2．2℃；0－2厘米土壤水分提高2．7％，出苗期提早9－11天；幼稳分化延长7－11天。苗期覆盖比不覆盖的穗粒数增加4．6－6．7粒，千粒重增加2克以上。丰产技术如下。一、高质量整好地在秋深耕的基础上，地解冻3．3厘米就开始整地
Wheat was planted to the seedling stage. The temperature of 0-5 cm plow layer increased by 2.2 ℃. Soil moisture in 0-2 cm soil layer increased by 2.7% and the seedling emergence period was 9-11 days earlier. The young stable differentiation was prolonged by 7-11 days . Seedling coverage than non-covered spikelets increased by 4.6-6.7 grains, grain weight increased by 2 grams or more. High yield technology is as follows. First, the high quality intact autumn deep plowing on the basis of 3.3 centimeters to thaw began preparation