Water Harvesting Techniques for Drought Resistant Cultivation of Corn in Water-saving Films
As a new type of new drought-resistance technology, corn rain-collecting water-saving membrane cultivation technology can increase the temperature and maintain the function of the plastic film, inhibit weeds, facilitate storage of water, improve the survival rate of transplanting, and further enhance the lodging resistance of corn. At its core, the full-membrane-covered 70-80 centimeters wide film is changed to 40-50 centimeters, covering the rows of corn, or the corn is sown on both sides of the film after the film is covered. This technology can save more than 40% of the cost of the cover film, and minimize the increase of soil water content among the plants. It is a new type of drought-restraining technology. The technical points are as follows: 1 Specification for opening: When planting in autumnal spring, standard open the car, implement "double three zeros", "double twenty five" medium belt planting or "double 50", "double six 0" broadband planting, reserve maize planting belt. For plots with non-standard reservation lines, it is sufficient to step on corn planting belts in Xiaochun (wheat, rapeseed, etc.) when it matures, and to ensure proper sowing of maize and reduce symbiotic contradictions. 2 Applying base fertilizer and bottom water in the middle ditch: Before the sowing or transplanting of corn, dig a trench about 20 cm deep in the middle of the corn planting belt (ditch two building water sluice), according to Mushi compound fertilizer 30 kg, original manure 1000 500 kg of water as base fertilizer and bottom water are all applied in the ditch. In the later stage, two more fast-acting nitrogen fertilizers can be applied at the jointing and booting stages; or a long-acting slow-release fertilizer such as “Bestowa†can be applied once in the ditch. ~ 60 kg, no longer top-dressing in the later period. 3 Small ridges and double rows: After combining the ditch with the base fertilizer and the bottom water, it forms a small ridge with a height of 20 cm above the ground and a ridge width of 40 to 50 cm. The ridge surface is a tile type. 4 Capping membrane water retention: After application of base fertilizer water ridging, or cumulative rainfall of 20 mm in the spring for 3 days to 5 days, the dry soil layer on the surface of the soil is significantly reduced, and immediately after the ridging of the micro-film with a width of 40 to 50 cm On the surface, we will use the mud around to keep the fertilizer. 5 film side shoots: corn planting (sowing) on ​​the margin of the cover film, 2 rows of corn per ridge. 6 Wet-wet root-enhancement: Due to the alternating rainfall and seasonal drought during the corn growing season, the root zone of the maize is in a dry-wet alternating state, which promotes the development of the root system and the lower barrows. It can not only absorb deep soil water, but also effectively congregate. Cover the film after precipitation. Note: The technology is suitable for the shallow hill area below 1000m above sea level, and the soil thickness is not less than 40cm. Due to the need to increase the temperature of the mulching film in high altitude areas in mountain areas, it is recommended to promote the full-membrane coverage technology. Single Arm Electric Surgical Pendant
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