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Late sowing wheat late sowing film to promote early-onset
The techniques of mulching film covering wheat in the whole growth period have the characteristics of drought resistance, water saving, warming and moisture conservation, root-increase and culturing, etc. It is suitable for application in late wheat field, wheat field in dry land. When planting mulch film wheat, the middle and top fertility plots with flat terrain, good ploughability, and good lyrical conditions should be selected to ensure the quality of sowing. Fine soil preparation before sowing, combined with shallow ploughing and fertilization, make the surface soil of the wheat field loose, smooth and free of rubbish, so as to facilitate the sowing of film and preserve moisture. Plastic film mulching inconvenience, should be combined with site preparation and base fertilizer, to prevent late defermentation, generally Mushi fertilization 3000 ~ 4000 kg, 50 kg of ammonium bicarbonate, 50 kg of phosphate fertilizer. Film laying time depends on the soil moisture, when the moisture is good, when the film is planted, when the bottom is full but the surface is poor, combined with 7 to 10 days in advance of the preparation of the film, the surface of the table should be dry when the soil is loose to loose soil Re-film sowing. Planting mulch wheat should use varieties with dwarf, big ear and strong tillering power, such as Zhongmai No. 9 and Zhenghan No. 1, etc., seed treatment should be done before sowing, and 100 grams of phoxim and methyl isophosporate should be used for water. 1 kg, seed dressing 50 kg to control underground pests. Because the film has a warming and heat-keeping effect, the sowing time of the film-mulched wheat can be postponed for 7-10 days compared with the open season, so as to fully exert the effects of increasing the temperature, protecting the soil and promoting the early-onset film. The 140 cm wide membrane is sown on 8 to 10 rows, and the 70 cm wide membrane is sown in 5 rows. Generally, about 35,000 holes per mu are planted, and 8 to 12 seeds per hole are sown. The sown sowing film of wheat has a small opening at the time of sowing, which may cause the film hole to be misaligned. A few of the wheat seedlings are pressed in the film. Therefore, the seedlings should be checked immediately after sowing to 2 leaves and 1 heart, and the wheat seedlings pressed in the film will be released. For the lack of seedlings and ridges, the same variety is used for reseeding. In addition, the film should be inspected at any time after sowing, and should be promptly covered in case of breakage to prevent winds from uncovering the film. In the winter, we must step up inspections to prevent livestock trampling and human damage. There are water-based conditions that can be combined with pour-water-saving chemical fertilizers, dry land can be sprayed fertilizer, spraying potassium dihydrogen phosphate, urea and plant growth regulators.