地膜覆盖近几年在粮食作物上应用范围不断拓宽,已由原来的仅局限于覆盖玉米、洋芋等稀植作物向小麦、谷子等作物发展。在冷凉水川区用地膜覆盖小麦,一般增产20～25%,高的增产30%以上。栽培技术要点如下:1.茬口选择。选择地势平坦或较平坦的地块; Film mulching In recent years, the scope of application of food crops continues to broaden, from the original only limited to cover corn, potato and other crops to the development of crops such as wheat, millet and other millet. Covering wheat with plastic film in cold and cool Mizoguchi generally increases yields by 20-25% and high yields by 30% or more. Cultivation techniques are as follows: 1 stubble selection. Choose flat or flat land parcel;