Black corn is a new corn variety introduced in recent years and is a precious health food for fruits and vegetables. Black corn plant height 120 cm, growth period of 90 days, German long 12-t5 cm, single panicle weight 150 grams, suitable for fresh corn sticks for sale, can also receive corn grain, for black food use. Planting black corn is of high value. It is generally planted in late March and planted in mid-June in the wrong season. The economic benefits are considerable. Requirements of soil conditions and fertilization techniques for black corn: Black corn is suitable for all types of soil. In the early spring, it needs to cover the mulch in order to improve the ground temperature and promote its normal growth. It is a rainy season in summer. Planting plots should pay attention to digging drainage ditch. Due to the current fertility of soil nitrogen, phosphorus deficiency, potassium deficiency. Preparation of base fertilizer should be added phosphorus, potassium, nitrogen stability. Due to the short growth period of black corn, short stature, and individual growth, it is suitable for one-time application of basic fertilizer. It requires 667 meters of diammonium phosphate 50 kg, potassium sulfate 25 kg, all-element compound fertilizer 10 kg or urea 20 Kg, superphosphate 50 kg.
Its high-yielding film cultivation techniques are as follows:
First, sowing according to plot preparation conditions, generally from the end of March to the beginning of April did not start the wrong season sowing, the wrong period of 15 to 20 days for a cycle, such as after the wheat harvest, you need to be in the wheat before 7 Days or so to carry out fleas in order to make black corn planting feet, sowing direct seeding, due to the black corn plant type is shorter, compact, lodging resistance and strong resistance, sowing must increase the density to stay per hole Strain, size, sowing, 667 m 2 sowing 3500-4000 points is appropriate, suitable strains (holes) spacing is 25 cm x 90 to 50 cm, such as row spacing planting, suitable strains (holes) spacing is 22-25 cm x 75 ~50 cm.
Second, cover the film according to the size of the row spacing to choose the appropriate film, cover the film after sowing, covering the film to straighten, leveling, the middle and four weeks with soil and earth pressure cover solid. In order to prevent the wind from scratching the mulch and losing the function of the cover film, the mulch film is often inspected. If fins or breakage are found, cover them immediately.
Third, field management technology
1. Seedling management The key to seedling management is Bao Miaoquan, Miao Qi, Miao Lian, Miao Zhuang. For some young seedlings that have no mulching film, they must be artificially broken to help them release the mulch. Some black maize lacking seedlings and ridges must be seeded and replanted; some seedlings, weak seedlings and time seedlings, and seedlings. Maturity time should be set at 2 to 3 leaves.
2. The key to management in the mid-to-late stage is to strive for a lot of success. The key to late-stage management is to increase the weight and increase the output. In response to the main objectives of management, some of the fertilizer shortages are due to the time, due to seedlings, and top dressing, 15 kg of diammonium phosphate and 5 kg of potassium sulfate.
3. Management of water mulching corn in early spring, the following species, generally can be small to the mouth of the mouth according to atmospheric conditions, determine the water or not; summer sowing of corn, generally about half a month to water, it should be noted that the water should be Pouring feet, drenching, not leaving water, especially in the early spring should pay attention.
4. Removal of Invalid Forked Black corn Due to the characteristics of the main stem for tillering, all stems produced by the main stem are removed leaving only the main stem.
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