April is the critical period of cherry germination, flowering and fruit setting, because the growth period of cherry young fruits is short, so the management in April is directly related to the production efficiency of the whole year, and it must be paid enough attention.
Before flowering
2~3 days before flowering, wash spray 1500 times foliar fertilizer, supplement tree nutrition through root topdressing, can improve fruit setting rate, prevent and alleviate frost damage caused by "inverted spring cold".
Do a good job of pollination during flowering
Roll a feather duster on the flower branches to assist in pollination. Bees in the orchard can release both bees and wall bees, with low price, good effect, and can also be recycled and reused. Generally, 100~200 bees are placed per mu, and a beehive is placed every 30 meters or so.
Top dressing during flowering
During the flowering and fruit setting period of large cherries, there are higher requirements for nutritional conditions, and what is needed for budding and flowering is to store nutrients, and fruit setting mainly depends on the nutrition of the year. Therefore, topdressing at flowering stage has a significant effect on promoting flowering, fruit setting and branch and leaf growth. Apply potassium sulfate humic acid fruit and vegetable fertilizer during the flowering period, according to the soil conditions, the amount of basal fertilizer applied in autumn and the amount of flowers per plant, 3 kg ~ 4 kg of potassium sulfate humic acid fruit and vegetable fertilizer per 100 catties of large cherries, and the soil is stirred evenly and then covered with appropriate amount of watering.
After thanking the flowers
Immediately after flowering, spray 1500 times thiophanate-methyl + imidacloprid + 1500 times foliar fertilizer to prevent and control leaf diseases and green bugs, pears, aphids, etc. At the same time, foliar topdressing was carried out to improve the fruit setting rate and promote fruit expansion.
Do a good job of frost damage prevention
Once the north wind cools the weather, it is necessary to water the orchard, which is one of the effective measures to prevent and reduce frost damage. At the same time, the temperature should be measured in the evening after the wind stops, and once it drops to 2 degrees Celsius, the orchard should be smoked and continued until dawn as much as possible.
In late April, premature senescence of young fruits will occur, and a large number of pits will be softened, and the fruits will not shrink. Strong trees are lighter and weak trees are heavier. There are two reasons for fruit drop: insufficient nutrients in the tree, more fruit set in the tree after flowering, competing for nutrients among the fruits, and those fruits with weak competitiveness fall off due to "hunger" due to insufficient nutrients stored in the tree;
The main preventive measures: strengthen management, improve the nutritional level of the tree, after flowering and before the hard core of the fruit, water in a timely and appropriate manner according to the soil moisture. At this stage, you can spray Ningnanmycin and other biological fungicides plus high-quality potassium dihydrogen phosphate to prevent perforation, supplement nutrition, and prevent fruit drop.
Big cherry management is introduced here, I hope it will be helpful to everyone. If you want to buy high-quality and high-yield large cherries, you can download the seed bank App, and the country's excellent large cherry varieties are available for everyone to choose.
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