The planting technology of corn in South China needs scientific sowing and rational planting.

Scientific sowing: corn can be planted in spring or autumn in the south, and the sowing method can be sown by stages, and the corn can be exposed to the sun before sowing, so as to ensure that it can better absorb water and nutrients. Reasonable planting: different varieties of corn should be planted separately as far as possible, and attention should be paid to the demand for temperature and light in different growth periods. Scientific fertilization: ammonia fertilizer, phosphate fertilizer and potassium fertilizer are the main fertilizers.

1. Scientific sowing

Corn in different regions, sowing methods are different, and corn is also divided into spring corn and autumn corn, can take different ways to sow. If corn is planted in the south, it is best to plant it in April-May in spring and July-August in autumn. When sowing, we can take the way of sowing by stages, which can continue from late February to late July. This way of sowing by stages can make the corn meet the market demand from June to October every year, and enable consumers to buy fresh corn on the market from June.

When sowing corn, it is best to bask the corn seeds in the sun. if you sow the dried corn seeds, the seeds can absorb water faster and develop better. If there are conditions, it is best to soak in the relevant chemicals and wrap the seeds with a layer of medicine, so that corn seeds can have a certain ability to defend against viruses and better prevent all kinds of diseases and pests during germination. Can grow better.

2. Rational planting

When planting waxy corn and sweet corn can not be mixed together, if different varieties of corn are planted together, it will cause the pollen between them to influence each other, thus affecting the quality of corn, so when planting different varieties of corn, it is necessary to isolate different varieties of corn for more than 200 meters, and in addition, the planting time should be separated as far as possible.

Xiyang, not resistant to high temperature, when planting must ensure its growth environment. Especially in the flowering and pollination period of corn, the demand for temperature is particularly high, so these times must ensure the temperature of its growing environment. When planting similar varieties, we should also pay attention to the planting density, planting about 4500 plants per mu of land. in order to improve the population uniformity of maize and reduce the number of empty stalks, the number of seedlings should be controlled at about 2 times of the planting density.

3. Scientific fertilization

Corn likes fertilizer, but it should not be fertilized blindly when planting, so nitrogen, phosphorus and potash should be increased appropriately when applying fertilizer. For corn, ammonia fertilizer is the highest demand, followed by potash fertilizer and phosphate fertilizer. When applying fertilizer, we should do it: base fertilizer, topdressing as auxiliary; organic fertilizer as main, chemical fertilizer as auxiliary; sufficient application of basic fertilizer, the principle of topdressing by stages.