The black corn is fragrant, sweet, sticky and tender. It is extremely delicious, highly nutritious, highly nutritious, and highly immune. It can be used for food and food and is loved by consumers. Black corn is suitable for planting in most of the corn planting areas in China. It can be planted in spring and summer. The planting technology is basically the same as that of ordinary corn. The main techniques are as follows. 1. According to the platoon layout and species selection: determine the mouth, select the species, first according to local climate characteristics and expected time to market, followed by processing capacity and market demand information. At present, black corn varieties commonly used in production include Italian black corn, Peru black corn, South Korea Zijin black corn, backing black corn and so on. 2. Isolation planting: Black corn and common corn are planted separately to prevent stringing, affecting quality and coloration. First, there is no other corn planting in the range of 350-400 meters around the field where black corn is planted. The second is the time isolation method. Instead of sowing other corn varieties 20 days before and after sowing the black corn, stagger the timing of corn flowering and pollination to prevent stringing. 3. Seed treatment: Sowing before sowing, soaking in warm soup and seed dressing. Black corn seeds are small and not full. Store less nutrients. About 7 days before sowing, the seeds were tanned. The seeds were separated according to their size and were sown separately to strive for consistent seedlings. In order to make the seedlings grow quickly and homogeneously, it is best to soak in warm soup and sow after germination. Can be used 0.2% - 0.4% potassium dihydrogen phosphate solution soaked for 12 hours, remove and drain water, place germination at 30 °C place, there are 70% -80% seed when sowing. 4. Fine sowing: black corn germination and arching ability is weak. To select a good fertility, moderate pH, irrigation and drainage is convenient, the end of the planting of the foot of the land. For fine soil preparation, shallow broadcast sowing, the depth is generally 4 cm. 5. Reasonable dense planting: The planting density of black corn depends on the variety characteristics, soil fertility, sowing date, planting method and market demand. 6. Field management: In the period of 3-4 leaves, seedlings and transplants are planted and planted. When transplanting seedlings, soil should be taken and watered immediately after planting, preferably in the evening or on cloudy days. When the leaves were 5 leaves, 1 seedling was planted per hole, combined with top-dressing cultivating and weeding, soil loosening at the seedling stage, and jointing period before the big horn gate period. Reasonable irrigation and drainage, soil moisture at the seedling stage in the field of the maximum water holding capacity of 50% -60%, can not irrigation, soil water retention should be maintained at 70% of the maximum water capacity in the field. Black corn has many characteristics of tillering and branching. In order to ensure the yield and grade of the ear, it is necessary to remove the fleas as soon as possible so as to avoid damage to the main stem and leaves. In the jointing stage, heading flowering stage and grain filling stage, a top dressing was performed. 7. Artificial Pollination: Because the density of black corn is larger, the leaves are shaded each other, pollination is bad, and diminutive baldness is easy to occur. Therefore, artificial pollen must be collected on the flowering stage to be granted to the ear, and edge-picking is practiced every day from 10 to 11 am. 3-5 days. 8. Pest control: Based on the implementation of comprehensive agricultural control measures, the corresponding pesticides should be used, but care should be taken not to use pesticides with large residues and long residue periods, and they should be used 20 days before listing to prevent residues from occurring after eating fresh spikes. Pesticide poisoning events. Corn borer is a major hazard to black corn, not only affects yield, but also affects ear appearance and commodity grade. It should be controlled by adopting pesticides on the basis of crop rotation, removal of corn stalks in the field, etc., but it is best to use biological agents to control: 1/15 hectares (1 mu) of Bt milk (powder) 150-200 g, mixed with 10 kg of sand, evacuated in the bell mouth of black corn leaves, 2-3 per plant, or with spores per gram One part of 5-10 billion Beauveria bassiana powder is mixed with 10-20 pieces of granules, and it is thrown into the heart and leaf plexus at the heart leaf stage. When the height of the plant is 30 cm, the water is sprayed with azidophoride once, and 1/15 hectares of jointing stage is sprayed with 20% Jinggangmycin crystal powder 50 gram of water and 50 kilograms of foliar spray to prevent and treat large-scale spot and sheath blight. Times. 15 days apart. 9. Timely Harvest: The highest sugar content is 22-28 days after silking, and the thinnest skin is the most suitable for harvesting. Early and late harvest will affect the quality and taste of black corn. When processing and selling, it is advisable to steam steam the water, and do not boil it so as not to degrade the quality of the black corn. China Agricultural Network Editor
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