The corn double-row mulching cultivation technology adapts to most of the high-yield counties (cities) in Jilin Siping, Changchun, Liaoyuan, Songyuan and Heilongjiang. The double-row mulching cultivation technique of corn ridge can increase the yield by about 15% on average. 1, film The film can be used with an ultra-thin film with a width of 90-100 cm and a thickness of 0.007-0.008 mm, 60 kg per hectare, either artificial or mechanical. When the film is covered, the film is flattened and laid on the ridge surface, and the two sides are compacted with soil. After the film is covered, the light receiving width is about 60-70 cm. When covering the membrane, press a soil every 1.0-1.5 cm on the ridge surface to prevent the wind from peeling off the mulch. 2. Field management (1) Shear hole introduction When the corn emerges and the first true leaf is unfolded, it is necessary to cut the seedlings in time to introduce the seedlings, and then seal the seedling holes with the wet soil after the seedlings are introduced. (2) Control corn borer According to local conditions, biological, physical and chemical control technologies such as Trichogramma, sexual attractant, Beauveria bassiana, high-pressure mercury lamp and chemical pesticide granules are used to prevent corn mash. (3) Applicable film Uncovering the film can be carried out at the end of June and early July, and the film must be clean and reduce white pollution. (4) Topdressing In the big bell period, 300-400 kilograms of urea per hectare is used to carry out the ridge side deep topdressing, and the depth of topdressing reaches 8-10 cm. (5) Promotion It can be used to spray the plant growth regulator to remove the grass in the field and the ground, remove the non-functional leaves at the bottom of the plant, and dry the plants with stalks and leaves to promote early maturity. Corn ridge double-row mulching film cultivation technology should be applied according to local conditions, pay attention to solve residual film pollution. The number of plants per acre is calculated (according to the plant spacing of 22 cm): about 5,512 plants/mu for large ridges and 4,664 plants/mu for small ridges, and 848 plants per acre for large ridges and double ridges. Area comparison (calculated by mu): Large ridges are planted with 5.5 acres in double rows, which is equivalent to 6.5 acres of small ridge planting, that is, 5.5 acres of large ridge planting is equivalent to 1 mu of small ridges.
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Corn mulch double-row mulching cultivation technology