The latest seed price and planting method of black corn

Black corn is a special type of corn, the appearance of black shiny, its seed cuticle to varying degrees of melanin precipitation, rich in water-soluble melanin and various essential trace elements, plant protein and various amino acids, nutrient content is significantly higher than other cereal crops, let's take a look at the price of black corn seeds and planting methods!

How much is black corn seed?

The price of black corn seeds is about 40~60 yuan a catty, but the price varies greatly due to the quality, variety, origin and market of seeds. Black corn is suitable for planting in most corn planting areas in China. It can be sown in spring and summer. The planting method is basically the same as that of ordinary corn. The cultivation method is simple. The seeds used per mu are about 5~6 jin. More than 4000 fresh cobs can be harvested. The fresh weight of single ear can reach 250 grams. At present, the fresh ears are mainly sold on the market. Therefore, factories, mines, colleges and cities can be developed appropriately.

What are the varieties of black corn?

1. Black pearl sweet corn: Black pearl sweet corn is the main cultivated variety promoted at present, with good resistance, wide adaptability, high yield, dry seed yield of 450 kg/mu, fresh ear harvest period of 80~85 days, seed maturity period of 105 days, and suitable density of 3500 plants per mu.

2. Black glutinous hybrid varieties: Black glutinous hybrid varieties include Heinuo No.1, Heinuo No.2, Heinuo No.3, etc. Among them, Heinuo No.2 has conical ears, small seeds, compact plant shape, black and wrinkled seeds after maturity and drying, sticky fragrance without residue, belonging to medium maturity and early maturity varieties.

Black corn sowing method

1. Variety selection: black corn varieties should be determined according to the marketing time and local planting environment. At present, the commonly used black corn varieties in production mainly include Italian black corn, Korean purple gold fragrant black corn, mountain black corn, black glutinous hybrid, etc.

2. Isolation planting: black corn and ordinary corn shall be planted separately to avoid cross-pollination. No other corn shall be planted within 350~ 400m around the field where black corn is planted. At the same time, no other corn varieties shall be sown 20 days before and after black corn sowing to stagger the flowering and pollination time of corn.

3. Seed treatment: black corn seeds are small, not full, and have little stored nutrients. Sun-seed is carried out about 7 days before sowing. Seeds are separated according to size and sown separately to strive for consistent emergence.

4. Fine sowing: The germination and arching ability of black corn is weak. It is necessary to select plots with good fertility, moderate pH value, convenient irrigation and drainage, and sufficient soil moisture for planting. Fine soil preparation, shallow sowing and fine sowing are generally appropriate. The depth is generally 4 cm.

5. Reasonable close planting: The planting density of black corn should be determined according to the variety characteristics, soil fertility, sowing date, planting method and market demand, and the general density is 3000~3500/mu.

Black corn planting methods

1. Whole soil fertilization: black corn has a short growth period, short plant shape and fast individual development. It is suitable for one-time application of base fertilizer. It is required to apply 50 kg of phosphoric acid, 25 kg of potassium sulfate, 10 kg of all-element compound fertilizer or 20 kg of urea and 50 kg of calcium superphosphate per mu.

2, seedling transfer fixed seedlings: black corn planting in 3~4 leaf period seedlings and seedling transfer replanting, seedling transfer to bring soil, after planting that is watering, preferably in the evening or cloudy days. 1 plant per hole at 5 leaves, cultivating soil before jointing stage to big trumpet stage, removing tillers and branching early.

3, watering management: black corn seedling soil water content of 50~60% of the maximum water holding capacity in the field can not be irrigated, after jointing soil moisture should be maintained at 70% of the maximum water holding capacity in the field, generally can be small bell stage according to weather conditions to determine whether to water.

4. Timely topdressing: black corn should be topdressed according to the time, seedling and land. Generally, 15 kg of dipotassium phosphate and 5 kg of potassium sulfate should be used for topdressing at jointing stage, heading stage, flowering stage and filling stage respectively.

5. Artificial pollination: black corn planting density is relatively high, leaves shade each other, poor pollination, easy to appear thin grain bald, so artificial pollen collection in flowering period is given to the ear, while picking and pollination, 10~11 a.m. every day, for 3~5 consecutive days.

6. Disease and pest control: Black corn is mainly eaten fresh. Comprehensive control method should be adopted for diseases and pests. Biological agents, Bacillus aureus, Jinggangmycin, etc. can be used to control corn big and small spot diseases and sheath blight. Pesticides with long residue period and large residue amount should not be used. The drug should be stopped 20 days before listing.

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