For sweet cherries cultivated in protected areas, due to their high density and small space, 20% of the space must be set aside for manual activities, and the crown must be controlled.

Chemical control In order to prolong the fertility of the protected cherry, the canopy must be strictly controlled. The most effective measure of chemical control is the application of paclobutrazol. For cherries 3 to 4 years old, a certain amount of paclobutrazol can be applied before the spring sprouts sprouting, generally 1 to 2.5 grams per plant, 2.5 grams of trees that are over-prosperous, and 2 grams of trees that are more prosperous. Shi Ke 1 grams, we must strictly control the amount. In addition, paclobutrazol can be sprayed during the growth period, and spraying after mid-May is appropriate.

In contrast, vegetative growth and reproductive growth are contradictory, and as a result, growth can be inhibited. The cherry fruit has a short growing period. After the fruit has been harvested for a long time, it can restore the nutrition of the tree. Therefore, under the premise of not affecting fruit quality, increasing the load of fruit trees can effectively control the crown.

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