Black corn is nutritious and rich in water-soluble melanin, a variety of essential trace elements, proteins and amino acids. It is delicious and delicious when it is fresh, and it is loved by people. First, suitable areas. Black corn is suitable for planting in most of the corn planting areas in China. Spring and summer sowing can be, the cultivation method is simple, with 2.5 kg per kg of seeds per 667 square meters - 3 kg. The suitable planting density is 3500-4000 strains/667 square meters. Second, the choice of species. According to climate characteristics and expected time to market, local processing capacity, market demand, choose the right variety. Commonly used varieties are black pearl sweet corn, black (violet) color waxy corn hybrid series of black locust 1, 2 and 3, Chinese black corn, South Korea black bag of corn and so on. Among them, black pearl sweet corn and black glutinous rice No.2 are both soft and delicious, sweet and savory, with good stress resistance, wide adaptability and high yield. Third, isolation planting. Black corn and common corn must be isolated and planted to avoid stringing and affecting quality and coloration. There are two isolation methods: First, the time isolation method, that is, do not sow other varieties of corn 20 days before and after sowing black corn, in order to stagger the timing of corn flowering and pollination. The second is the distance isolation method, that is, no other corn is planted within a range of 350 to 400 meters around the field where black corn is grown. Fourth, fine sowing. Black corn germinates and has a weak ability to bury earth, so it must be suntanned 7 days before sowing. In order to make the seedlings grow quickly and homogeneously, the seed soaked in the warm soup is used to germinate at a temperature of 30°C until 70%-80% of the seeds are sown. The sowing depth is 4 cm. The plots require good fertility, moderate acid and alkali, and convenient drainage and irrigation. Fifth, field management. When the black corn grows to 3-4 leaves, choose the evening or cloudy days for the thinning and transplanting. When transplanting seedlings, bring soil and water it after planting. 5 leaves, 1 seedling per hole, combined with topdressing weeding, seedling loose soil. Jointing period until the big bell mouth soil, in order to avoid lodging. When the soil moisture at the seedling stage is 50%-60% of the maximum water holding capacity in the field, no irrigation is required. Soil moisture after jointing should be maintained at 70% of the maximum water holding 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. The fertilizers were topdressed once at jointing stage, heading stage, flowering stage and filling stage. Six, artificial pollination. Due to the large planting density of black corn, the mutual shade of the leaves, poor pollination, and the appearance of baldness and dilute grains, it should be carried out 1-2 times of artificial pollination during the flowering stage. It should be carried out at 10-11 a.m. VII. Pest control. The black corn is mainly eaten fresh, and a comprehensive prevention and control method should be adopted for diseases and pests, such as crop rotation, removal of corn stalks and weeds in the field, and use of biological agents such as Bt emulsion, Beauveria bassiana, Jinggangmycin, etc. And sheath blight. Do not use pesticides with long residue and large residues. Drugs were stopped 20 days before listing. Eight, timely harvest. Black corn has the highest sugar content 22-28 days after the ear has been spun, and the thinnest skin is the most suitable for harvesting fresh food. Harvesting too early or late can affect its quality and taste. Steam steaming should be used when processing and selling, and do not boil, so as not to reduce the quality of black corn.
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