Maize Ridge Ridge upside film cultivation technology, the ridge cover film will be transformed into inter-line cover film, solve the ridge cover film technology existing hole seedling dislocation, artificial seedlings need to be put, mechanized operation is not matched, the quality of the sowing is not easy Take the film and other issues. Deeply fertilize, deep-seated, film-coated, precision on-demand, and overburdened soils are completed at one time. The soil water, fertilizer, gas and thermal environment are well coordinated, and sowing, fertilizing, exposing, cultivating, pest control and mechanization of harvesting are realized. .
The technology has the advantages of drought resistance, temperature increase, soil moisture conservation, increase of fertilizer utilization rate and prevention of winter frost, frost damage, etc. It can alleviate the impact of spring drought and low temperature on corn. The annual temperature can be raised to 80 degrees Celsius, and the number of grains per ear is increased by 20 grains, which is about 25% higher than that of conventional direct seeding.
Technical Highlights: 1. Standard ridge change ridges, sowing double lines. The custom-cultivated small ridges of 65 cm or 70 cm are changed to large ridges of 130 cm or 140 cm during site preparation. Two rows of corn were planted on a large ridge, and the row spacing of the corn was 35-45 cm.
2. Variety selection. Appropriate film cultivation varieties can choose late maturity, high yield, high quality, strong resistance varieties. The standard is 10 to 15 days longer than the local live seedling growth period, or the required accumulated temperature is 200°C to 250°C, or the number of leaves is 1 to 2 leaves.
3. Cultivate the soil and undulate the ridges. The plots with deep tillage layer, high fertility, good water retention, fertilizer retention, and good drainage require cultivating depths of 20 to 23 centimeters, so that no ploughing, no standing, no flooding, squatting, and post-ridge ridge tillage; Turn over the basic plot and pick up the ridge. The autumn tumbling spring ridge is a land with a better soil moisture content. When it is 14 centimeters in the early spring, it is timely repressed by hoeing, hoeing, and ridging; spring ridged ridge means the soybean and potato that are generally suitable for soil moisture.茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬 茬.
4. Fertilization techniques. The basal fertilizer is mainly organic fertilizer, and the basal fertilizer (basic fertilizer) is generally 1500-2000 kg per mu. Fertilizer application urea per acre 6 to 7 kg, 20-25 kg of ammonium phosphate, potassium sulfate 4 to 5 kg, zinc sulfate 1 to 1.5 kg. After the removal of the film, a deep side application is performed, with 14-18 kg of urea per acre and a depth of 10-15 cm. For the land with serious underground pests, 4 kg of 0.125% phoxim poison particles per acre were applied with the fertilizer strips.
5 film, sowing. The ground temperature after the film is stable and passes 5°C to 6°C. After freezing or freezing at minus 3°C after emergence or rupture of membranes, seedlings are sown. The agricultural mulch with a thickness of 0.008-0.01 mm is covered on a large ridge, and herbicides are used to close the weeds before the mulching. There are two kinds of sowing after the first sowing and the first coating. The plant spacing is determined by factors such as the selection of varieties, and the planting density is increased by 400 to 600 plants per acre compared with conventional cultivation.
6. Field management.
Pre-management: First, after sowing, one-leaf and one-hearted, two-leaf corn are placed in the cuttings, and only one plant per hole (hole) is left. After the planting, the seedlings are sealed with wet soil; Before and during the leaf stage. If lack of seedlings should be timely replanting the same age seedlings. Membrane protection should be found in the pressure and wind blow, immediately take the wet soil pressure; translucent surface does not meet the required width, to remove soil. When releasing the seedlings, the soil on the membrane should be properly removed, and the accumulated water on the membrane should be introduced into the furrow in time.
Mid-term management: timely delivery, but to avoid damage to the main stem. Using manual or mechanical film removal, selected sunny morning, the topsoil has been dry and not mucous membranes. The film removal time should be carried out when the corn leaves are ridged and the film heating effect is not significant. Normally, the temperature is high and it may be appropriate earlier; the temperature is low and it may be appropriate later. After the film was removed, the top dressing was promptly shovelled.
7. Comprehensive prevention and control of pests and diseases.
Appropriate area: The technique of covering film between rows of large ridges is suitable for the second and third accumulated temperature zones in Heilongjiang Province, and the effect of increasing production in drought areas and drought years is very significant, and the yield increases by more than 20% compared with ordinary cultivation methods.
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