Corn still needs to be fertilized after it has grown ears and formed cobs. During the growth of maize, nutrients are still needed to support grain formation and enrichment after cobs, as nutrients are required at this stage for a large part of the entire growth period. At this time, if the nutrients are insufficient, it will lead to a decrease in corn yield and quality.
The significance of fertilization is to provide corn with the nutrients it needs to promote its healthy growth and development. After corn cobs, appropriate fertilization can increase the efficiency of photosynthesis, promote the transport of nutrients to grains, and improve the yield and quality of corn. At the same time, fertilization can also improve soil fertility and create good soil conditions for the growth of corn or other crops in the next season.
However, it is important to note that the amount and method of fertilization should be determined based on factors such as soil fertility, corn varieties and growth. Over-fertilization can lead to over-nutrition, waste and environmental pollution, while under-fertilization can not meet the nutrients needed for corn growth, affecting yield and quality. Therefore, scientific and reasonable fertilization management should be carried out according to the actual situation when fertilizing.
In addition, according to the fertilizer requirements of maize after ear growth and cob, potassium fertilizer and nitrogen fertilizer should be applied to meet the large amount of nutrients required for maize growth at this stage. At the same time, attention should also be paid to the rational combination of phosphorus, calcium, magnesium and other nutrients to ensure the balanced nutritional needs of corn at all growth stages.
In short, corn still needs to be fertilized after the ears and cobs are formed, but the amount and method of fertilization need to be scientifically and reasonably mastered. Through reasonable fertilization management, the yield and quality of maize can be improved, soil fertility can be improved, and the foundation for sustainable agricultural development can be laid. At the same time, it is also necessary to pay attention to avoid improper operations such as excessive fertilization to protect the environment and human health.
Finally, it should be emphasized that in actual agricultural production, a reasonable fertilization plan should be formulated according to the specific situation. This includes a combination of soil testing, fertilizer selection, fertilization timing and method. Through scientific and reasonable fertilization management, high yield, high quality and sustainable production of corn can be realized, and the development of agriculture and the increase of farmers' income can be promoted.