Black corn is a new corn variety introduced in recent years and is a precious health fruit and vegetable food. Black corn plant height is 120 cm, growth period is 90 days, Dechang is 12-t5 cm, and single ear weight is 150 g. It is suitable for fresh corn cobs for sale, and corn kernels can also be used for black food. The value of planting black corn is very high, generally starting from the end of March, and planting in the wrong phase in mid-June, the economic benefits are considerable. Soil conditions and fertilization techniques required for black corn: Black corn is suitable for all types of soil cultivation, and early spring planting needs to cover the mulch film in order to improve the ground temperature and promote its normal growth, and the summer season is in a rainy season. Planting plots should pay attention to dug drains. Because of the current soil fertility, nitrogen, phosphorus deficiency, and potassium deficiency. The application of base fertilizer should supplement phosphorus, increase potassium, and stabilize nitrogen. Due to the short growth period of black corn, the plant shape is short, and the individual development is very fast. It is suitable for one-time application of base fertilizer. It requires 667 m 2 of diammonium phosphate 50 kg, potassium sulfate 25 kg, and all-element compound fertilizer 10 kg or urea 20 Kilograms, 50 kg of superphosphate.
Its high-yield film cultivation techniques are as follows:
First, planting according to the preparation of the plot, - from the end of March to the beginning of April to start the wrong period of planting, the wrong period of 15 to 20 days as a cycle, such as sowing after wheat harvest, you need to be before the wheat harvest 7 Do not make sputum in the day, so that the black corn foot stalk can be sown, and the seeding should be directly on-demand, because the black corn plant type is short, compact, anti-backup and strong resistance, and must increase the density when planting, leaving double for each hole. Plant, size row sowing, 667 m 2 sowing 3500-4000 points is appropriate, suitable plant (point) line spacing is 25 cm x 90 ~ 50 cm, such as row spacing planting, suitable plant (hole) line spacing is 22-25 cm x 75 ~50 cm.
Second, cover the mulch film according to the row spacing of the plant to choose the appropriate mulch film, cover the mulch film after sowing, cover the mulch film to straighten, level, the middle and surrounding with clods and soil pressure cover strong. In the wind, the film will be scraped off and the film will be lost. Afterwards, the film will be inspected frequently. If it is found to be damaged or damaged, it should be covered immediately.
Third, field management technology
1. The key to seedling management during seedling management is Bao Miaoquan, Miaoqi, Miaoyun and Miaozhuang. For some seedlings that do not lie out of the mulch, artificial rupture should be taken to help them supply the mulch. Some black corn that lacks seedlings and ridges should be replanted for seedlings; some seedlings, weak seedlings, and time seedlings and seedlings. The time between seedlings should be set at 2~3 leaves.
2. The key to mid- and post-management management is to strive for more grains and more grains. The key to later management is to increase grain weight and increase production. For the main objectives of management, some lack of fertilizer seedlings, due to time, seedlings, and topdressing, 15 kg of diammonium phosphate, 5 kg of potassium sulfate.
3. Management of water film corn in the early spring and under the foot, generally can be determined according to the atmospheric conditions of the small thorns, to determine whether watering or not; corn planted in summer, usually poured about half a month, it should be noted that the water should be once Pouring the feet, pouring them, leaving no water, especially in early spring.
4. Removal of ineffective tillering Black corn has the characteristics of tillering of the main stem. Therefore, the tiller produced by the main stem is removed to leave only the main stem.
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