Covering the caves and harvesting, the Bazhou District Agricultural Technology Station in Bazhong City last year broadcast wheat in a mulching film in Qingjiang Town, and obtained a good yield of 397.8 kilograms per mu, which is 48.4 kilograms higher than the uncovered acres, an increase of 13.9%. Overcoming the problem of low local temperature and low annual production. The specific operation of this technology is as follows: 1. High-standard soil preparation. The level of soil preparation directly affects the wheat yield. Specific requirements include no large earth blocks on the surface, no bumps, no erection of miscellaneous roots and hard objects, and the achievement of fineness, flatness, and netness. 2, selected wheat varieties. The improved varieties are the internal cause of production increase and the basis for high yields. Selecting high-yield products with good yield, strong resistance and moderate growth period is the key measure to capture the high yield of plastic film wheat. Generally, Chuanmai 107 and Chuanmai 10 should be the main products, and it should be matched with other high-quality and high-product varieties. 3, apply enough base fertilizer. In the application of base fertilizer, the method of "bottom chase and clearing" and supplementing the foot is mainly adopted. Generally, 1500 kg of organic manure, 10-15 kg of pure nitrogen, 40-50 kg of superphosphate, 7.8-9 kg of potassium oxide, 1 kg of potassium fertilizer, and 0.5 kg of boron fertilizer are used as a one-time base fertilizer. 4, high-quality film sowing. The film covering the hole sowing wheat technology is the first after covering the hole sowing. Before coating, 3000-4000 kg of water-fertilizer (without grass residue) is used to ensure that the humidity in the field is 75-80%, and the dry land must be maintained at more than 85%. The wheat herbicide was sprayed once before the film was covered, and the filming needs to be smooth. It should be as close as possible to the ground. The film should be stretched while opening the film, while the width of the box is 2.5 meters. It is advisable to press a piece of soil at a distance of 1-1.5 meters to prevent the film from being blown by the wind, and then sowing the hole while drilling. The hole distance is 10cm. Line spacing 20cm, hole depth 4-5cm, 6-9 seeds per hole sowing, acres of 2.5-2.8 million acres better. 5. Strengthen field management. 1 seedlings. If there is too much mulching film, you need to use a small stick to pick out the seedlings outside the membrane before 3 leaves, but be careful not to make the membrane too open, otherwise it will affect the insulation effect of the coating. 2 Weeding. Individual weeds with membranes can be removed manually and weeds under the plastic film can be compacted and compacted with soil. 3 protective film. Prevent animals from entering the field and trampling. Films that are blown or torn by the wind must be pressed in time. 4 later to spray full weight gain fertilizer, generally 0.2-0.3% of potassium dihydrogen phosphate (above 96%) liquid, mu spray fertilizer 45 kilograms, can play a full grain weight gain, to achieve the purpose of high yield. At the same time, attention should be paid to the prevention and control of pests and diseases at various stages of wheat production. After wheat is harvested, the waste film should be removed to reduce soil pollution.