Which one swells faster, nitrogen fertilizer or potassium fertilizer? What are the functions of nutrients required during the fruit expansion period? It is understood that nitrogen and potassium fertilizers are sources of nutritional supplementation during plant growth, and their reasonable application can make plants grow more vigorously. So which one swells faster, nitrogen fertilizer or potassium fertilizer?

1、 Which one swells faster, nitrogen fertilizer or potassium fertilizer

At present, there is no specific comparison between the two. The growth process of plants requires more trace elements and does not rely on a single element for growth.

Compared to nitrogen fertilizer, potassium fertilizer swells fruits faster. When young fruits swell, it is necessary to supplement an appropriate amount of nitrogen fertilizer to promote growth and provide nutrients, while potassium fertilizer is a substance that urgently needs to be supplemented after fruit setting. The two fertilizers play important roles in different stages of plant growth and complement each other.

2、 The role of nutrients required during the fruit expansion period

1. The sweetness of fruits with secondary expansion is generally low, and sweetness begins to appear only after color change. When young fruits begin to swell, nitrogen needs to be supplemented, which is the basic element of amino acids and proteins. Insufficient nitrogen inhibits protein synthesis and cell division in fruit cells during swelling. Nitrogen is also a fundamental component of plant growth hormone.

Excessive nitrogen can lead to excessive fruit growth and a decrease in sweetness. Proper nitrogen application is crucial before the fruit turns color, especially during the initial swelling of young fruits.

2. Potassium in plants can regulate metabolic sources and photosynthetic products, and is an important element in promoting fruit enlargement and color change. It is beneficial for the accumulation of photosynthetic products in the fruit and can increase the sugar content in the fruit.

3. Calcium can stabilize the cell wall structure and participate in the formation of intercellular binding substances, improve the adhesion between fruit cells, and reduce the probability of fruit cracking. Improving the surface glossiness of fruits and reducing the occurrence of diseases such as bitter acne have a significant impact on increasing fruit yield and income.

4. Boron not only promotes calcium metabolism, but also facilitates the transfer of organic matter from xylem to phloem. If boron is deficient, the photosynthetic products of the leaves will not be able to be transported to the fruit or roots, resulting in a lack of dry matter in the fruit.

5. Magnesium is the main component of chlorophyll, and sufficient magnesium can promote photosynthesis, increase the accumulation rate of organic matter, and thus promote fruit enlargement.

The difference between nitrogen fertilizer and potassium fertilizer

Nitrogen fertilizer: The main varieties include ammonium hydrogen nitrate, ammonium sulfate, urea, calcium nitrate, etc., which can provide plant nitrogen elements, promote tree growth, and increase chlorophyll. Potassium fertilizer: The main varieties include potassium chloride, potassium sulfate, potassium dihydrogen phosphate, etc., which can provide plant potassium elements, make tree stems and branches tough, promote flower bud formation, and fruit ripening.