How to manage peach trees during the fruit enlargement period? These key points you need to master

In summer, during the period of peach fruit growth and development, this is also a critical period for peach tree management, as it is crucial to peach yield and fruit quality. The fruit development of peach trees can be roughly divided into three stages. So how should peach trees be managed during the fruit enlargement period? Let's take a look together.

1. The first rapid growth period

Around 35 days after peach flowering, the material basis for fruit growth is the nutrients stored in the tree body, and the amount of stored nutrients in the peach tree determines the number of fruit cells. After peach harvest, carry out summer pruning, use winter pruning to ensure a high-yield tree shape, adjust the position, number and distribution of fruiting branches, maintain the balance between the aboveground part and the root system, the number of retained flowers and the tree vigor, overcome the contradiction between tree aging and renewal and rejuvenation, and improve the utilization rate of stored nutrients. At the same time, timely thin flowers and fruits, so that unnecessary nutrients are consumed, which has an obvious promoting effect on promoting fruit enlargement. At the same time, flower thinning can adjust the vegetative growth and reproductive growth of the tree body, so that nutrients are used to promote new shoot growth and increase the number of leaves, while strengthening fertilizer and water management, using assimilated nutrients produced by leaves to promote the enlargement of young peach fruits.

2. The second rapid growth period

Management during this period is related to the final size of the fruit and is a key period for fruit enlargement. The main task is to manage and regulate the contradiction between vegetative growth and reproductive growth and strengthen fertilizer and water management. For plants with weaker tree vigor, fertilizer and water should be strengthened to promote vigor, while for plants with overly vigorous tree vigor, vegetative growth can be adjusted through pruning to ensure good permeability. The potassium content of peach fruit is 2 times that of nitrogen fertilizer and 3 times that of nitrogen, so potassium fertilizer is most important for peach growth. Potassium fertilizer can be applied 3 weeks before harvest, which has an obvious effect on promoting fruit enlargement and improving quality. During the fruit enlargement period, water demand is at its highest, and drought at this time will seriously affect fruit enlargement. Generally, irrigate once 2 weeks before harvest to maintain soil water holding capacity at about 40%.

3. The hard pit stage

This is the slow fruit growth period and also the peak seed growth period. At this time, the demand for phosphate fertilizer is relatively large, and it is relatively sensitive to changes in soil moisture. At this time, fertilization should mainly be potassium fertilizer, supplemented with phosphorus and nitrogen fertilizers, and should be applied before the hard pit stage, while spraying 0.3% monopotassium phosphate 1~2 times. The hard pit stage is relatively sensitive to [missing source text], and lack of water or too much water can both cause fruit drop. Long drought followed by rain or excessive irrigation can easily cause pit splitting. Irrigate once before entering the hard pit stage. During the hard pit stage, if drought continues, a small irrigation can be given as appropriate, but it should ensure that the soil moisture content does not change much.

The above is an introduction to the key management points for peach trees during the fruit enlargement period. I hope it can help you. To learn more related knowledge, please stay tuned to us.