Why is the fruit of the same tree sweet and sour?

The main reasons are that there are several differences in fruits: first, there are differences in pollination, some have good pollination, and some have poor pollination effect; Second, there are differences in nutrient absorption, some fruits have strong ability to absorb nutrients, and some fruits have poor ability to absorb nutrients; Third, there are differences in lighting conditions, some fruits are in the parts with better lighting conditions, and some are in the parts covered by leaves or other objects; Fourth, there are differences in growth and development, some fruits are naturally robust and not susceptible to pests and diseases, while others are more susceptible to pests and diseases.

Extended Materials. Factors influencing fruit quality.

1. The natural environment.

Fruit trees grow in soil, temperature, and light. Poor soil environment can lead to poor growth and development of fruit trees, resulting in low fruit quality. The same is true for temperature and light, without a good external environment, there will be no good quality fruits.

2. Pollination of fruit trees.

Flower pollination is a particularly critical part of the growth stage of fruit trees, compared with natural pollination, artificial pollination can ensure the quality of the fruit, and the relevant technical operators will generally use manual pollination, so that the quality of the fruit will be guaranteed.

3. Fruit tree load.

There is a certain limit to the growth environment that fruit trees can provide, and if there are more fruits, the nutrients transmitted to each fruit will not be balanced, that is, the apex effect is more obvious. As the fruit of the tree increases, its yield will also increase, but the quality of the fruit cannot be guaranteed.

Fourth, cultivation measures.

Improper cultivation management measures are the most critical factors affecting fruit quality. Because whether it is the external environment or the internal factors of the fruit tree itself, we can solve it through refined management, so that the fruit tree can produce high-quality fruits. For example, plastic pruning, thinning flowers and fruits, bagging cultivation, soil and fertilizer management, and pest and disease control.

Plastic pruning can solve the problem of ventilation and lighting, bagging cultivation can solve the problem of pests and diseases, thinning flowers and fruits can solve the problem of load, and soil and fertilizer management can solve the problem of nutrition. Therefore, management is the key measure to solve the problem of fruit quality.

The nutrients absorbed are different, the intensity of sunlight is different, and there are grafted.

The sugar content (sweetness) of different parts of the fruit on the same tree varies because:

Different parts of the shoot have different light and action intensity, resulting in different parts of the fruit sweetness.

Although the fruits all grow on the same tree and absorb the same amount of water and fertilizer, due to the different orientations of the branches and leaves they are born on, the branches on the sunny side receive more light, and the opposite side receives less light; The branches in the upper part of the canopy receive more light, and the lower part receives less light; The foliage in the outer layer of the canopy receives more light than the foliage inside the canopy. More light is received, which means more light and products (carbohydrates) are synthesized, more sugar is obtained and stored in the fruit, and the natural sweetness is higher, and vice versa.

The difference in sweetness of the fruit on the same tree is mainly due to the fact that the fruit grows on different branches and receives different photosynthesis. <>

1. The sweetness of the fruit depends on the concentration of fructose contained in the fruit, and the fructose concentration is relatively high, so the fruit will be sweeter. The fruit tree is photosynthesized and uses sunlight to photosynthesize, so as to synthesize glucose, and the chemical action inside the fruit turns glucose into fructose, so the sweetness of the fruit that has been exposed to light for a long time is higher. For example, when I was a child, I liked to go to the canopy of trees to pick fruits, and the fruits tend to be redder and sweeter due to the long hours of light.

However, due to the demand of the market, the color requirements for the fruits are relatively strict, and most of the fruits that flow into the market are bagged. In this way, we can see that the color of the fruit is more consistent from the appearance, and we can't tell which fruit is sweeter and which is more sour. <>

Second, the fruit on the same tree has different growth times, and the nutrients absorbed may not be balanced, so it will also cause differences in the sweetness of fruits. This is because farmers fertilize the trees during fruit management, such as nitrogen and phosphorus. At this time, the fruit on the tree grows at different stages, and its needs for various trace elements are different, so it will also cause differences in the sweetness of each fruit.

3. Temperature will also affect the sweetness of the fruit. The sweetness of the fruit is actually before the ripening period, using light to produce carbohydrates during the day, and respirating at night to consume the carbohydrates in the fruit, and the lower the temperature at night, the more carbohydrates will be consumed in the fruit's body. So we see that in areas with relatively large temperature differences, such as Xinjiang, the fruits produced will be particularly sweet.

The ripening period of the fruit on the tree is different, and the weather conditions will vary from day to day, resulting in different temperatures. Therefore, even if the fruit is on the same tree, it will cause a difference in the sweetness of the fruit.

Even though they are fruits from the same tree, different fruits have different textures due to their different locations and different degrees of sunlight.

The position of each jujube is different, which directly leads to their different sunlight absorption, and at the same time, the nutrients absorbed by them will be different according to their own strength, as well as whether there are insects and so on.

The main reason is that the nutrients and light that these fruits come into contact with are different, so the taste is also different.

Sapindus mukorossi gaertnAliases:

Wood Worm (Compendium of Materia Medica), Oily Soapberry (Sichuan), Bitter Tree (Hainan), Yellow Eye Tree, Eye Lang Tree (Taiwan), Oil Luo Tree, Hand Washing Fruit, other local names: Rubbing Eyes, False Longan, Ghost Seeing Sorrow, etc.