Detailed Explanation of Corn Fertilization Methods and Precautions
Corn occupies a very large proportion of China's planting industry, and in recent years, through a great deal of scientific research and development, the varieties of corn and the resistance of corn have undergone great changes. There are many kinds of corn, with extremely strong resistance and increasingly strong adaptability to the environment, but fertilization is still a very important part of achieving high corn yields. Below, today Qinnongwang brings you some practical tips on corn fertilization, hoping they will be useful to everyone.
Fertilization Methods
1. Base fertilizer
The base fertilizer for corn planting is the foundation of corn growth and development, so applying the base fertilizer well is also preparation for later high yields. For the base fertilizer, we generally use farmyard manure as the main component and chemical fertilizer as a supplement. On average, one mu requires 3,000 jin of decomposed farmyard manure, as well as about 50 to 100 jin each of phosphate fertilizer, compound fertilizer, potassium fertilizer, and urea. Spread them evenly over the land after it has been turned once, then re-level the land and work the fertilizer into the soil. This can maintain fertility, enhance the resistance of corn growth, and help corn adapt to the growing environment as quickly as possible.
2. Full-stand seedling fertilizer
About ten days after corn is planted, seedlings will emerge. Because corn grows and develops at different rates in the soil, some grow relatively fast while others grow very slowly. In order to increase corn yield, we apply fertilizer once at this time. According to the different degrees of corn seedling growth, apply a little more fertilizer to the weaker ones and just a little to the stronger ones. This can promote the growth of weak seedlings, let them quickly catch up with the growth of the stronger ones, and ensure that corn seedlings in the field grow at a consistent rate. Full-stand seedling fertilizer mainly uses urea, with an average of about 50 kg per mu.
3. Seedling-lifting fertilizer
In many places, due to climate reasons, if corn seedlings grow too tall, they may break, causing heavy losses. Therefore, corn seedlings do not need to grow too tall. When corn grows to 40 cm, we can apply a seedling-lifting fertilizer to the corn in the field. Seedling-lifting fertilizer is not simply meant to increase the growth rate of corn seedlings, but to help corn complete growth quickly and promote flowering, thereby improving corn growth efficiency. Seedling-lifting fertilizer is similar to full-stand seedling fertilizer and is also mainly based on urea, but about 30 kg of compound fertilizer can be mixed in appropriately, which can enhance the resistance of corn seedlings to a certain extent.
4. Fruit-promoting fertilizer
Fruit-promoting fertilizer generally takes place after corn has eared and small corn cobs appear. At this time, we can spray some foliar fertilizer along with a small amount of boron fertilizer and potassium fertilizer to ensure the survival of the corn cobs and promote their growth. In this way, the corn cobs grow faster, the corn kernels grow fuller, and it can also have a ripening effect.
Precautions
The main precautions for corn fertilization are fertilizing according to time and according to the land. In general, fertilizing according to the time periods mentioned above is sufficient, but sometimes special situations also occur. For example, if corn seedlings grow too slowly, we can also apply additional fertilizer. Next, if the soil fertility is insufficient and relatively poor, additional fertilizer can also be applied. Then, when fertilizing, note that the fertilizer must not be too close to the roots of the corn seedlings, otherwise the corn seedlings will be burned. Also, for chemical fertilizers such as urea and compound fertilizer, after broadcasting them, we should cover them with soil, otherwise the fertility will weaken. Finally, when spraying foliar fertilizer, do not spray too forcefully.