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(1) pure corn planted with corn simply covered with film and can be sowed by large and small rows. The big line is 93 to 100 centimeters, and the small line is 33 to 40 centimeters. Each area is 133 centimeters. Different fertility yield levels and different types of varieties are suitable. Planting density.
(2) Wheat Intercropping Corn or wheat and corn One membrane can be used in both ways. This method can also use 133 centimeters as a belt, each row of four rows of wheat, wheat spacing 16 centimeters, empty belt 85 centimeters, 2 rows of corn, corn The spacing is 33 centimeters, with a 100-centimeter spacing, an average of 66.5 centimeters, and the spacing between corn and wheat is 18 centimeters. Maize yields 400 to 500 kg, density 3300 to 3500 plants/mu, and plant spacing 28 to 30 cm. The yield per hectare is 500-600 kg, the flat type is 3500-3800 per mu, and the compact type is 3750-4200.
(3) Wheat interplanting corn mulching film or a dual-purpose interplanting beans This method is usually 180 cm in area, with 6 rows of wheat per belt, 16 cm rows of wheat, 100 cm empty belts, and 2 rows of mulching corn in empty belts. Narrow lines 33 centimeters, wide lines 147 centimeters, average spacing 90 centimeters, corn spacing 33.5 centimeters from wheat. When the corn yield per mu is required to be 400-500 kg, 2900-3000 strains per mu and the plant spacing is 24-25 cm. When the yield per unit is 500 to 600 kg, 3000 to 3500 trees per mu, and the plant spacing is 22 to 24 cm. Before the wheat was harvested, 2 rows of soybeans were interplanted in the wheat ridge. The soybeans had a narrow row spacing of 32 cm, 57.5 cm from the corn, an average row spacing of 90 cm, a plant spacing of 10 to 13 cm, and 5700 to 7400 plants per mu. The sowing time of mulching corn is generally 10-15 days earlier than that of exposed land, that is, when the local temperature stabilizes at 7-8°C, it begins to sow mulching corn. The ground temperature after the film can generally rise to 3 ~ 4 °C. Premature sowing may cause the seed to lose its germination and seedling ability because the ground temperature is too low, and it will lose the significance of the cover film later.
What are the main points for planting corn cover corn?
The main points for the cover film corn planting include planting methods, planting density and sowing date. The planting density of corn-covered corn is affected by factors such as variety, yield level, soil fertility and planting methods. Generally, flat varieties with flat leaves should be thin, and compact varieties with straight upright leaves should be compact. Poor fertilizer and water conditions should be thin, and fertilizer and water conditions should be good. According to the research and large-scale planting experience, the main methods for growing cover-film corn are: