What causes high or low corn yields?

China's corn planting area is still relatively extensive, and the emergence of hybrid corn has pushed corn yields to yet another level, with annual corn production getting better and better. This is related to many factors, so today what we want to understand are the factors affecting corn yield. However, since there are many factors affecting corn yield, below are several relatively important ones compiled by the editor. Let's take a look.

1. Variety selection

There are now many different corn varieties, and each variety has different resistance traits, such as strong drought resistance, strong disease resistance, strong cold resistance, strong waterlogging resistance, and so on. Whether the variety is chosen correctly is the most fundamental factor affecting corn yield. To increase corn yield and keep it from being affected by variety factors, we need to select varieties based on a comprehensive consideration of all aspects of the location where the corn is planted.

2. Planting conditions

The impact of planting conditions on corn yield is mainly shown in three aspects: temperature, soil, and light. If the planting conditions are not conducive to corn growth, then no matter how good the variety selected is, it will not help. Therefore, planting conditions are also an important factor affecting corn yield, and at the same time they are the basic conditions for corn growth, so we need to choose suitable planting sites for planting.

3. Density management

When the above two basic conditions have no problems, the planting density will also affect corn yield. Since corn growth requires a certain amount of light, if the planting density is too high, the field will appear relatively gloomy, thus affecting corn growth and ultimately affecting corn yield. Also, too high a density will affect pollination, which is the reason for the final reduction in corn yield. If planted at normal density, the corn cobs will be much larger, and thus corn yield will also increase.

4. Water and fertilizer management

Water and fertilizer are a key factor affecting corn yield. We usually also achieve the goal of increasing corn yield by strengthening water and fertilizer management. If there is too much moisture in the field, corn seedlings will rot and other diseases will occur, which will reduce corn yield. Next, if there is too little moisture, the corn seedlings will dry up and die, which will also lead to reduced yield. Then, if fertilizer is applied excessively or improperly, it will lead to reduced corn yield, while if too little fertilizer is applied, it will cause nutritional deficiency in corn and ultimately lead to reduced yield.

5. Weed control management

Weeding is a relatively important step in corn planting. We all know that weeding can promote the growth of corn roots and corn seedlings, and it can also promote the growth of corn cobs. To a certain extent, it can also enhance corn's resistance, thereby increasing corn yield. However, if weeding is not carried out reasonably during corn planting, it will first lead to loss of nutrients, secondly attract many pests, and then slow down corn growth, causing it to miss the best fruiting period and ripening period, ultimately leading to reduced corn yield.

6. Disease management

Throughout the entire growth period of corn, there are actually many pests and diseases. Once vigilance is relaxed and prevention and control are not carried out properly, the damage to corn is very great, because it affects not just a single corn plant but the entire patch of corn. Therefore, disease management is also an important factor affecting corn yield.