Common corn planting methods are sowing or transplanting, but there will still be dead and uneven emergence during planting, and the yield of corn will not improve. The film cover planting can effectively enhance the ability of corn to resist frost. It is a good method of planting. You can learn from the following planting steps.
1 Select the appropriate variety
The selected varieties have a growth period of 7 to 14 days longer than the main varieties cultivated in the open field, so as to make full use of the light resources, and to have good stability, high quality, disease resistance and lodging resistance.
2 Isolation and planting with other corn
Once the waxy corn is contaminated by other corn pollen, it will seriously affect its flavor and quality. Space isolation and time isolation can be used for planting. Space isolation generally requires no other types of corn within the range of more than 300 meters, so that pollen outside the isolation zone can not be invaded, and the isolation method is the safest. Time isolation is to delay or delay the planting time of the corn in the isolation zone, so as to be staggered from the corn flowering period outside the isolation zone. Generally take time to isolate, mulch cover cultivation, early sowing for 15 to 20 days, can achieve isolation.
3 fine soil preparation, apply enough base fertilizer
Choose loam soil, convenient drainage, moderately textured loam or sandy loam soil; use winter leisure for deep freezing. Before sowing, 667 square meters of rotted farmyard manure was about 5,000 kilograms, urea was 10 kilograms, diammonium phosphate was 25 kilograms, and potassium fertilizer was 10 kilograms. Plowing and ploughing. For a width of 1 m, the width of the crotch is 80 cm, the width of the gutter is 20 cm, and the depth of the gutter is 20 cm.
4 suitable sowing, reasonable close planting
On-demand broadcasting began in early April and went on sale in early July. Two lines per line, 40 cm line spacing, 25~30 cm plant spacing, 4500~5000 plants per acre, 3~4 seeds per hole, 3 cm deep, with water on demand.
5 film selection, film coating
The use of microfilm to reduce the coverage can not only reduce the cost, but also facilitate the accumulation of natural precipitation. In the production of small ridges (line spacing 65 ~ 70 cm), cover film width 30 ~ 40 cm, large ridge (line spacing 100 ~ 105 cm) double Row (plant double-row corn), film width 70 ~ 80 cm, film is the main technical link of film cultivation of corn, according to sowing and filming can be divided into two methods.
5.1 First filming after sowing
After the emergence of seedlings, the film is released, the advantage is that it is not only suitable for machine seeding, but also can ensure the quality of seeding film, and the seedlings are neat, but it is not conducive to pre-sowing protection, breaking the seedlings and sealing the labor, and releasing the seedlings in time.
5.2 seeding after mulching
When seeding, punch holes in the membrane, and seal the membrane pores with wet soil after sowing. This method is beneficial to protect the seedlings after sowing. Generally, there is no need to put seedlings. If the seedlings are not found under the membrane, the seedlings should be released in time.
Regardless of the method, the film is applied in a windless weather. When the film is covered, the film is stretched and flattened, and it is pressed against the ground. The film is pressed 5 to 10 cm on both sides of the film, and the film is pressed every 6 to 7 meters. To prevent strong wind tympanic membrane.
6 Strengthening field management
6.1 Broken film seedlings
After the emergence of the seedlings, the membranes are ruptured in time, and the membrane holes are sealed with soil. Check the emergence condition. If there is a lack of seedlings, it should be immediately germinated to replant or transplant with soil. During the three-leaf period, the seedlings will be fixed in the five-leaf stage, and one seed will be left in each hole.
6.2 Fertilizer and water management
The corn grows vigorously after jointing, and the demand for fertilizer water is large. It needs to be topdressed. 20~25 kg of urea per acre is applied. Immediately after topdressing, water is poured to promote the development of ear and knot. That is, the seedling period, the big bell mouth period, and the initial stage of grain filling. In case of flooding, it is necessary to drain water in time to prevent waterlogging.
6.3 Pest Control
For underground pests, such as cockroaches, crickets, and ground tigers, phoxim or 90% crystal trichlorfon 250 grams of water can be dissolved in 5 kilograms and sprayed on 100 kilograms of chopped weeds for trapping. It can also be fully sprayed at the peak of young larvae with 25% quick-killing emulsifiable concentrate 1000 times or 52.5% agricultural emulsifiable concentrate 1000 times. In the prevention and control of corn borer, the eggs of Trichogramma can be inoculated in the big trumpet period, and the drug with high efficacy and no residue is used to prevent and control the safety of the product. It is also possible to control aphids by using 5% Regent Suspension 1000 times solution or 25% Quick Killing Emulsion 1000 times solution during the silking period. The overall control effect is over 90%.
7 timely harvest
Waxy corn is mainly sold in green and tender ears. It should be harvested at the right time in the middle of corn milk ripening, 20~25 days after pollination. When harvested, the green skin is peeled off together for easy transportation and preservation.
Waxy corn is a kind of corn that is better sold. It can be cultivated by mulching method and can promote the early maturity of corn. The above is a detailed cultivation management method. You can learn from it.
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