When will cherry antifreeze be played?

Spraying 150x PBO in the big bell stage of cherry trees can improve the frost resistance. Spraying protective agents in the big flower bud stage, the cooling range is expected to be small, when not less than-2 degrees, spraying protective agents, such as Tian Da 2116, fish protein antifreeze, Yunda 120, compound sodium nitrate, fruit tree flower bud antifreeze and so on, it plays a certain role in resisting frost.

Flower and fruit management:

Flower and fruit management is a necessary technique to improve the quality of cherry fruit. However, in fact, not only the management of flowering and early fruit harvest but also many links such as pruning measures, fertilizer and water regulation and so on.

1. Spraying "Yunda-whole tree fruit" 1500-2000 times 1-2 times before and after the early flowering stage of cherry can fully promote the normal development and elongation of pollen bud and pollen tube, significantly increase the fruit setting rate, and help pollination and fertilization to reduce the shedding of flowers and fruits.

2. During the expansion period of young cherry fruit, spraying "Yunda-whole tree fruit" 2000 times can reduce the shedding of cherry stalk, prevent the formation of pedicel delamination, reduce the secondary physiological fruit drop, and fully promote the synchronous division and elongation of cells. make the stalk strong and elongate, accelerate the uniform growth of fruit, promote the synthesis and transformation of fruit sugar, and obviously increase the selling price.

3. At the initial stage of fruit coloring, measures such as picking leaves and laying reflective film 10-15 days before harvest are taken to promote fruit coloring, and spraying calcium salt before harvest (spraying 0.3% calcium chloride solution three times every other week before harvest can reduce fruit cracking and prolong shelf life).