For fruit farmers, high-quality fruit not only has strong market competitiveness, but also has high economic benefits, which is less affected by market fluctuations and is a very potential planting direction. More and more fruit farmers also hope to grow high-quality fruits to meet the existing social needs.

Fruit size, fruit shape index, color and flavor are important indicators to measure fruit quality and commodity. Color directly affects the commercial value of fruits, such as apples, grapes, strawberries, oranges and other crops. The color and texture of fruit largely determine the commercial value of fruit and the economic benefits of growers. The fruit surface is smooth, the color is good, it is more favored by consumers, and the price is naturally high. In addition, if you color it in advance, you can go public in advance and sell it at a good price. Therefore, strengthening fruit appearance coloring is an important link to ensure a bumper harvest in one year.

Unfortunately, although all the color-changing products on the market have certain effects, they all have shortcomings.

Advantages and disadvantages of products commonly used in the market to promote fruit discoloration

Hormone discoloration products still dominate the market. They have no nutrients, and can only play the role of discoloration, ripening and falling, mainly to meet people's demand for fresh fruits and go on the market early.

Exogenous hormones (ethylene, abscisic acid) can promote pigment synthesis in a short time, but the internal nutrients of fruits are not affected or even reduced, which will cause "good-looking but not delicious".

Secondly, some exogenous hormones can accelerate the consumption of soluble sugar in fruit, and the fruit is easy to soften after picking, which greatly affects its storage. In addition, if the concentration is not appropriate, it will also cause bad discoloration, fruit shedding, fruit cracking, yellow leaves and other side effects, which will seriously affect the income of fruit farmers.

So, how can we grow "delicious" fruit? In my opinion, it is enough to remember the following six points on the basis of choosing "excellent varieties".

1, get more sunshine.

Everything grows on the sun. The nutrition of plants comes from photosynthesis, and the sun is the main energy source of photosynthesis. Why are apples in Xinjiang sweeter than apples in Shandong, Shaanxi? The key factor is that the sunshine hours in Xinjiang can reach 3000~3300 hours, while the sunshine hours in Shaanxi (north) and Shandong are only 2200~3000 hours. In addition, planting density and planting methods have a great influence on the quality of fruits, and the core factor is whether you can get more sunshine.

Japan advocates sparse planting, and mostly adopts plane tree structure with thin leaf curtain, high coverage and good light reception. For example, the cultivation of peach "big vine" is to achieve the goal of producing high-quality peach fruit through big crown, sparse planting and ultra-weak pruning. The planting row spacing is 4×4 meters, and 42 plants are planted per mu. After three years, thinning is carried out year by year according to the growth of trees. Due to different soil fertility and varieties, the final planting density is also different, but generally only 65,400 plants are left per mu.

Around 1995, the Netherlands and other western European countries innovatively put forward the intensive cultivation technology model of dwarf rootstocks based on the consideration of saving the labor cost of apple orchard management. This cultivation mode of wide row and close planting reduces the land utilization rate on the surface, but improves the light utilization rate in essence. The wide rows leave a passage for mechanical operation, and at the same time leave a passage for sunlight, so that every branch, leaf and fruit on the tree can get sunlight. The results showed that the proportion of photosynthetic products distributed to fruits in the new model was 67%, which was 10 ~ 15 percentage points higher than that in the traditional model, and the yield and quality were greatly improved.

At the end of 20 16, Jiangsu zhangjiagang phoenix agricultural science and technology co., ltd changed all the trunk shapes of peach trees to y-shape. Yan Dahua, the person in charge of the company, believes that the Y-shaped leaves have thin curtains, good ventilation and light transmission, easy control of tree growth, uniform and orderly results, many drooping fruits, positive fruit shape, good color, sweet taste and high product order, which can avoid the shortcomings of hanging branches and leaves in trunk shape, which leads to the trees and fruits not seeing light and poor fruit quality.