Increasing the fruit set rate is the most important part of the process of planting fruit trees, and cherry tree planting is no exception. How can cherry trees increase the fruit set rate? Here's how to improve the cherry fruit setting rate.
1. Water in time
Big cherries are highly dependent on water and are neither drought-resistant nor flood-resistant. In order to ensure its normal growth, on the basis of watering 4 times of water before flower, after flower, before harvest, and before freezing, the key point is to water the key water 10-15 days after the flower, and the amount of water should be large. It is advisable to keep the soil water holding capacity in the field at 60%-70%.
2. Improve the orchard
Microclimate In order to avoid or reduce the damage caused by the high temperature weather before and after the flowering period of the big cherry, it is necessary to build a windbreak forest belt when selecting the site for the garden. Pay attention to listening to the local weather forecast, and actively take corresponding measures before and after the high temperature. You can support the sunshade net 30-50 cm above the canopy before the flower, and water after the flower to promote normal flowering and fruit setting.
Three, top dressing before flowers
Topdressing should be done early before flowering and immediately after the soil is thawed to promote flowering and fruit setting that year. About 1 month after harvesting is the period of flower bud differentiation, topdressing should be done immediately, which can increase the flower formation rate by 33.6%. At the same time, appropriate amounts of calcium, boron and other trace elements should be supplemented.
Fourth, control the tree potential
To get out of the vicious circle of relying solely on regulators to control the tree's momentum. On the one hand, it is necessary to reduce the content of nitrogen in the soil, rationally use phosphorus, potassium fertilizers and middle and trace elements to control the growth from the source. On the other hand, immediately after the fruit is harvested, the stalks in the dense canopy should be removed, and the useful stalks should be opened at an angle and lightly cut to ease the growth and early flowering.
Five, decisive processing
Virus tree The occurrence and spread of the virus tree is a major obstacle affecting the fruit setting of big cherry. Once found, it must be dealt with in time. The whole plant should be removed, and the root system in the tree hole should be thoroughly cleaned; the large branch with the local disease should be completely removed, and the graft should not be changed, and the flower should not be collected for pollination.
Six, reasonable match
Almost all big cherries that pollinate are self-flowering and not fruitful. Many varieties are outcrossed and incompatible, and they just bloom and bear fruit. Therefore, when cultivating large cherries, you must choose more than two pollinated varieties that are similar in flowering period to the main varieties, and have better genes, yield and quality, and the proportion should reach about 30%.
Seven, scientific pruning
The big cherry has soft xylem, thick ducts, and easy flow of glue at the cut. Therefore, the first of its pruning is to seize the key period: the top of the bud turns green for pruning; the growth period pruning is carried out 10-15 days after the flower has died and about 10 days after the harvest. Pruning during these two periods, the wound is not easy to flow glue or less glue. The second is to pay attention to the method: according to the habit of big cherries, it is necessary to use cutting skillfully and more hands-on, with summer cutting as the main and winter cutting as a supplement. Pinching, twisting, and pulling the branches on the back at the right time to stabilize the tree's vigor and form flowers early.
The above is an introduction to the methods to increase the fruit setting rate of cherries. Friends who plant cherries can refer to the above methods to increase the fruit setting rate and plant them reasonably.
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