Detailed Explanation of Key Points of Sweet Corn Cultivation Techniques
Sweet corn is a variety of corn and has a very large market demand in our country. Sweet corn can not only be steamed, boiled, and eaten in other ways, but can also be eaten directly raw, and it has an extremely sweet taste, making it popular with many people. Nowadays, more and more people want to grow sweet corn, so how should sweet corn be grown? Below, the editor brings you the cultivation techniques for sweet corn. Let's take a look!
1. Soil selection
Sweet corn cannot self-pollinate, and during the flowering period it also must not be pollinated with ordinary corn, otherwise its quality will be greatly affected. Therefore, when choosing planting soil, we should try to avoid ordinary corn being grown nearby. If there is any, it should be at least about 300 m away, and the flowering periods with ordinary corn should be staggered. The soil should have sufficient fertility and strong permeability, then land preparation should be done well, drainage and irrigation ditches should be dug, and the soil should be exposed to the sun for maturation. One week before transplanting, sufficient base fertilizer should be applied, thoroughly mixed with the soil, and then the soil should be leveled.
2. Seed soaking and germination promotion
Doing a good job of seed soaking and germination promotion can effectively increase the germination rate of sweet corn seeds. First, we need to soak the seeds in warm water at about 30 degrees for about 5 hours, then remove them and air-dry them. Then wrap them in a wet cloth and place them at a temperature of about 33 degrees for germination. The germination time should be controlled at about 3 days. When more than half of the seeds have sprouted, they can be sown. When soaking the seeds, be sure to control the germination time well. If the time is too short, the germination effect will be poor and the germination rate will be low. If the time is too long, it will increase the rate of rotten seeds and likewise reduce the germination rate.
3. Sowing and raising seedlings
The seed germination rate of sweet corn is relatively low, and the seeds are relatively expensive, so after germination promotion, it is best to use seedling-raising pots for raising seedlings. This improves the rate of uniform emergence and ensures a full stand. First, sufficient base fertilizer should be applied to the seedbed. About 7 days before sowing, apply fully decomposed farmyard manure and an appropriate amount of compound fertilizer. Then finely level and rake the soil, and sow one seed per nutritional pot. After sowing, cover with about 1 cm of fine soil, then cover with a layer of film to improve heat retention. After emergence, uncover the plastic film, strengthen management, water appropriately, and transplant when the seedlings grow to 3 true leaves.
4. Field management
When transplanting, be careful to control the planting density well and ensure sufficient permeability. When transplanting, apply an appropriate amount of compound fertilizer to each planting hole and then water thoroughly to improve the transplanting survival rate. After survival, apply an appropriate amount of farmyard manure per mu to meet the nutrients needed for seedling growth. Then do a good job of intertillage and weeding. Field moisture should not be excessive, and accumulated water should be drained in time to prevent root rot. When managing the second crop, because the temperature is too high, although the management method remains unchanged, the time should be appropriately advanced and the amount of fertilizer applied should be increased to ensure yield.
The above is a brief introduction to sweet corn cultivation techniques. The cultivation techniques for sweet corn are still somewhat different from those for ordinary corn, so everyone should pay more attention to avoid unnecessary losses and impacts on planting benefits. That is all for today's introduction. This article is for reference only. Thank you all for reading and supporting.