Seed price and planting method of black corn

Black corn is a special type of corn, its appearance is black and shiny, its grain stratum corneum precipitates melanin in varying degrees, and is rich in water-soluble melanin and a variety of essential trace elements, plant proteins and various amino acids. The nutritional content is significantly higher than that of other cereal crops. Let's take a look at the seed price and planting methods of black corn.

How much is the black corn seed per jin?

The price of black corn seed is about 40-60 yuan per jin, but it varies greatly due to the quality, variety, producing area and market of the seed. Black corn is suitable for planting in most corn planting areas in China, both in spring and summer, and the planting method is basically the same as that of ordinary corn. The cultivation method is simple, with about 5 kilograms of seeds per mu, more than 4000 fresh sticks can be harvested, and the fresh weight of a single ear can reach 250g. At present, it is mainly sold on the market of fresh ears, so factories, mines, colleges and universities and cities can develop appropriately.

What kinds of black corn do you have?

1. Black pearl sweet corn: black pearl sweet corn is the main variety popularized at present, with good stress resistance, wide adaptability and high yield. the dry seed yield is 450kg / mu, the fresh ear harvest time is 8085 days, the grain maturity period is 105days, and the suitable density is 3500 plants per mu.

2. Heinuo hybrid varieties: Heinuo No. 1, Heinuo No. 2 and Heinuo No. 3 are hybrid varieties, among which Heinuo No. 2 has conical ear, small grain, compact plant shape, black wrinkle after maturing and drying, sticky fragrance without residue, and belongs to mid-maturing and early-maturing variety.

Sowing method of Black Corn

1. Variety selection: black corn varieties should be determined according to the time on the market and the local planting environment. At present, the commonly used black corn varieties are Italian black corn, Korean Zijinxiang black corn, Daishan black corn, black waxy hybrid and so on.

2. Isolation planting: black corn and ordinary corn should be planted in isolation to avoid cross-pollination, and there is no other corn planting within 350 to 400 meters around the field where black corn is planted. At the same time, no other corn varieties were sown for 20 days before and after sowing black corn to stagger the time of corn flowering and pollination.

3. Seed treatment: black corn seeds are small, not full and have less nutrients stored. Sun-sow the seeds about 7 days before sowing, separate the seeds according to size, sow separately, and strive to produce seedlings in the same way.

4. Fine sowing: the ability of black corn to germinate and arch soil is weak, so it is necessary to choose plots with good fertility, moderate pH, convenient irrigation and drainage, sufficient soil moisture, fine soil preparation, shallow sowing and fine sowing, and the suitable depth is generally 4 cm.

5. Reasonable close planting: the planting density of black corn should be determined according to variety characteristics, soil fertility, sowing time, planting mode and market demand, and the general density is 30003500 / mu.

Planting method of Black Corn

1. Soil preparation and fertilization: black corn has short growth period, short plant shape and fast ontogeny, which is suitable for applying sufficient base fertilizer at one time, requiring 50 kg phosphate per mu, 25 kg potassium sulfate, 10 kg all-element compound fertilizer or 20 kg urea and 50 kg calcium superphosphate per mu.

2. Transplanting seedlings: black corn is planted during the period of 3 leaves and 4 leaves, and the seedlings should be replanted with soil and watered immediately after planting, preferably in the evening or cloudy days. One seedling was fixed in each hole at 5 leaves, soil was cultivated before jointing stage to trumpet gate stage, tillering and branching as early as possible.

3. Watering management: black corn seedlings may not be irrigated when the soil moisture is 50-60% of the maximum field capacity. After jointing, the soil moisture should be kept at 70% of the maximum field capacity. Generally, watering can be determined in the small trumpet period according to the weather conditions.

4. Timely topdressing: black corn should be fertilized at the jointing stage, heading stage, flowering stage and filling stage respectively with 15 kg of dipotassium phosphate and 5 kg of potassium sulfate.

5. Artificial pollination: black corn has high planting density, shaded leaves, poor pollination, and is prone to dilute baldness, so pollen is collected artificially and pollinated on the ear at the flowering stage, which is carried out at 10: 11 am every morning for 3-5 days.

6. pest control: black corn is mainly eaten fresh, and comprehensive prevention and control of diseases and insect pests should be adopted. biological agents, Chrysobacterium and Jinggangmycin can be used to control corn leaf spot and sheath blight, and pesticides with long residual period and large residues should be avoided. Stop using drugs 20 days before the market.

7. Timely harvest: 22-28 days after silking, the sugar content of black corn is the highest, the skin is the thinnest, and it is the most suitable for harvesting. Early or too late harvest will affect the quality and taste of black corn. Steam should be used when processing and selling. Boiling will reduce the quality of black corn.