The dryland wheat mulching technology mainly covers the land cover film, saves water and saves water, and raises the ground temperature, so that the dryland wheat can obtain high yield and stable yield, and it can be divided into two types for the cultivation of film-mulching ridge and furrow sowing and film-mulching.

The film-mulching technique for film-mulching ridge and furrow sowing is a field semi-closed water-retaining cultivation technique. Technical points: 1. Immediately after harvest, wheat should be ploughed and hoeed. Before harvesting, it should be ploughed and rained. 2. Apply base fertilizer and concentrate on the base. 3. Rig cover film about half a month before sowing. Machines that can be rigged, filmed, and seeded at once can be machined or dredged, or mulching can be done manually. Animals can then be planted with a double row of animal power planter. The ridge distance is 50 to 60 cm, and the ridge bottom is 25 to 30. Centimeter, ridge height 10 cm, ridge roof arc, ridge cover film, planting ditch between the two ridges 30 cm sowing, row spacing 20 cm, planting two rows, mulching on both sides of the mulch does not leave mouth, and in the ridge membrane On an interval of 3 to 4 meters to fight a belt, to prevent the wind from uncovering the film. 4. Select the medium stalk varieties with strong tillering power, high spike success rate, large panicles, large grain weight, and high yield. Generally, the water and fertilizer cultivars with strong drought resistance can be selected as dry film cultivation varieties. 5. The sowing date is delayed by 5 to 7 days compared to the local open cultivation, and the sowing rate is appropriately reduced. 6. After the planting, strengthen the protection of the plastic film during the overwintering period, remove the windproof film, prevent the humans and animals from stepping on the film, and prevent loosening after the rain.

The technique of soil preparation, fertilization, selection of varieties, sowing date, and sowing rate of mulching full-coverage sowing cultivation techniques are the same as those for cultivation techniques of ridge cover and inter-foliage. The difference is that the ridges are not raised, the mulch film is laid flat, and hole drilling is used, with 450,000 to 600,000 holes per hectare and 4 to 6 holes per hole. The seedling machine currently selected for production can be coated, punched and sown at one time. The plastic film with a width of 140 cm and a thickness of 0.007 mm is used for mulching. Each row broadcasts 7 lines of wheat with a spacing of 20 cm, a distance of 10 cm, a width of 20-30 cm, and a seeding depth of 3-5 cm. After the broadcast, every 2 to 3 meters of soil hits a belt, with the broadcast to play. After seeding, seedlings should be seeded and replanted in a timely manner. When the seedlings grow, they must be seeded in a timely manner when they encounter misplaced holes.

Straw mulching technology is to return straw to the surface, and it plays a role in water conservation and fertility conservation. The mulching and straw mulching technology is suitable for dryland wheat fields in Shanxi, Shaanxi and Gansu provinces in the northern winter wheat region. North Hebei, Henan, northwest region can also refer to use.

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