Sweet corn planting points\sweet corn storage

Sweet corn planting points

I. Isolation planting: Sweet corn and common corn should be isolated and planted so as to avoid stringing. In general, the plain area is separated by more than 400 meters. If there are natural barriers such as forests, hills, villages and houses, the distance can be shortened. If the maize is planted adjacent to the flowering stage, the flowering time must be staggered for more than 15 days.
Second, the fine sowing: sweet corn sprouting and arching ability is weak, to choose good fertility, moderate acidity, irrigation and drainage convenience, at the end of the foot of the planting. For fine soil preparation, shallow broadcast sowing, the depth is generally 4 cm.
Third, the stage of sowing: sweet corn can not be put long after harvest, therefore, the planting of sweet corn according to market demand and plant processing capacity, staged sowing, and early, middle and late maturing varieties to improve economic efficiency.
Fourth, rational dense planting: The planting density of sweet corn, according to species characteristics, soil fertility, sowing date sooner or later, planting methods and market demand. In general medium fertility soil, it is better to use 4,000 strains. Early maturing varieties can be denser and late-maturing varieties can be thinner.
V. Timely visits: Sweet corn generally has a strong tillering ability, and the tillers compete with the main stem for nutrients and moisture, affecting the growth of the main stem and the degree of hair growth. The delivery should be eliminated as soon as possible.
Six, to strengthen management: General Mushi farmyard fertilizer 3000 to 4000 kilograms, pure phosphorus 7 kilograms, 5 kilograms of pure nitrogen as the base fertilizer, six leaves in a timely manner when watering, and chase pure nitrogen 5 kilograms. As the growth of sweet corn can be used in the big bell mouth topdressing nitrogen fertilizer. In irrigated sweet corn fields, the irrigation should not be less than 3 to 4 times, and they should be carried out before jointing, heading flowering stage and filling stage. Sweet corn has a high sugar content and is easily damaged by corn borer. It can be sprayed with phoxim or methamidophos 1000 times in the early stage, or in a large bell period with a ratio of 1:5 with 3% carbofuran and fine sandy soil. Mix, 2 to 3 grams per plant poured into the heart.
VII. Timely harvesting: The harvesting period is mainly based on the appearance of the seed grains, and the number of days after pollination is calculated to determine the water content, the sugar content, and the taste is determined by taste. Sweet corn generally has the highest sugar content 20-25 days after silking, and the thinnest skin is the most suitable for harvesting.

Sweet corn storage

Optimal storage temperature: 0°C Relative humidity: 95-98% RH
After sweet corn was harvested, the sweetness and degree of isolation decreased rapidly. The higher the storage temperature, the faster this transition is, and it is a crop that is extremely resistant to storage. Therefore, few people make longer-term storage. General storage is only extended for a few days to match production and sales operations. After sweet corn is harvested, field heat should be removed in the shortest time to reduce product temperature, which is the main key to maintain the quality of sweet corn. The faster the cooling, the slower the sweetness of the sweet corn, the better the quality. As for the pre-cooling operation, such as crushed ice, water cooling, differential pressure air cooling, etc. can be used, depending on the production equipment and calculate the cost. In addition, in the process of storage, transportation, and trafficking, low temperatures must be maintained to maintain the good quality of sweet corn. The storage of sweet corn must also pay attention to the maintenance of high humidity, and the preservation of loquat leaves can reduce the loss of water and increase protection. If there is a layer of plastic wrap, the effect is better. However, attention must be paid to ventilation to avoid odors.
If you cut sweet corn kernels, the shelf life is quite short, and you can only store one day at around 0°C. Therefore, as a commodity sale, we must pay attention to the daily sales, do the right amount of treatment, and must be kept around 0 °C in order to maintain a considerable quality.
Storage temperature (°C) 0 5 10 15 Normal temperature (25°C)
Storage period (day) Package plastic wrap 8-12 5-10 2-5 Within 0-1 day

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