Southern Corn Cultivation Techniques: Key Points for Scientific Sowing and Rational Planting

AbstractScientific sowing: When growing corn in the south, you can choose spring or autumn, and the sowing method can be staged sowing. When sowing, you can first dry the corn in the sun so that it can better absorb water and nutrients. Rational planting: Different varieties of corn should be planted separately as much as possible, and when planting, attention should be paid to the temperature and light requirements at different growth stages. Scientific fertilization: Fertilization is mainly based on nitrogen fertilizer, phosphate fertilizer and potassium fertilizer.

1. Scientific sowing

Corn is sown differently in different regions, and corn is also divided into spring corn and autumn corn, which can be sown in different ways. If you are growing corn in the south, it is best to choose planting in April-May in spring and July-August in autumn. When sowing, staged sowing can be adopted, and staged sowing can continue from late February to late July. This staged sowing method can enable corn to continuously meet market demand from June to October each year, allowing consumers to buy fresh corn in the market starting in June.

When sowing corn, it is best to dry the corn seeds in the sun. If sun-dried corn seeds are used for sowing, the seeds can absorb water faster and develop better. If conditions permit, it is best to soak them in relevant chemical agents so that the seeds are coated with a layer of medicine, which can give the corn seeds a certain ability to defend against viruses, better prevent various diseases and pests during germination, and grow better.

2. Rational planting

When planting, waxy corn and sweet corn cannot be mixed together. If different varieties of corn are planted together, their pollen will affect each other, thereby affecting the quality of the corn. Therefore, when planting different varieties of corn, different varieties of corn need to be isolated by more than 200 m. In addition, the planting time should also be separated, and the planting time should be staggered as much as possible.

It likes sunlight and is not tolerant of high temperatures, so its growing environment must be ensured when planting. In particular, when corn is in the flowering and pollination stages, the temperature requirements are especially high, so the temperature of its growing environment must be ensured at these times. When planting the same variety, attention should also be paid to the planting density, with about 4500 plants per mu of land. In order to improve the uniformity of the corn population and reduce the number of empty stalks, the number of seedlings that emerge should generally be controlled at about 2 times the planting density.

3. Scientific fertilization

Corn likes fertilizer, but fertilization cannot be done blindly when planting, so nitrogen fertilizer, phosphate fertilizer and potassium fertilizer should be appropriately increased during fertilization. For corn, nitrogen fertilizer is the most needed, followed by potassium fertilizer and phosphate fertilizer. When fertilizing, the principles should be: base fertilizer as the main part, topdressing as the supplement; organic fertilizer as the main part, chemical fertilizer as the supplement; apply sufficient base fertilizer and carry out staged topdressing.