What is the main management of big cherry trees in summer?

What is the main management of big cherry trees in summer? Please introduce the main management of summer cherry trees in the following aspects: 1. Soil, fertilizer and water management big cherry fruit development period is short, need nutrient concentration, pay attention to pre-flowering, fruit development period and after fruit harvest, autumn topdressing, the first time is mainly nitrogen fertilizer combined with phosphorus and potassium fertilizer, the second time is mainly phosphorus and potassium fertilizer, after fruit harvest is mainly compound fertilizer, it can also be applied rotten familiar manure, rotten bean cake water, etc. (autumn is better for soil and miscellaneous fertilizer), this fertilization is beneficial to flower bud differentiation and increase next year's yield. Water should be irrigated after fertilization, from flowering to fruit ripening, if the weather is dry, pay attention to irrigation to ensure adequate water supply, and pay special attention to drainage in the rainy season. two。 The main technical measures of summer pruning big cherry are coring, twisting, taking branches, thinning branches and so on. Summer pruning can weaken the growth potential of branches, promote the formation of short branches and bear fruit earlier. ① thinning is mainly carried out after fruit harvest to remove large branches and overdense twigs that affect ventilation and light transmission, without retention value, and improve ventilation and light transmission conditions. ② coring should start from the middle of May, leaving 5 leaves for every 20 cm 25 cm of the upper branch, 40 cm for the elongated head of the main branch and 40 cm for the lateral branch, and 60 cm for 60 cm for every 80 cm 90 cm. 3. Diseases and insect pests control cherry diseases mainly include dry rot, gum disease, root cancer, early defoliation disease, root rot disease and so on. Methyl topiramate, mancozeb and other fungicides can be used to control leaf and fruit diseases, and Bordeaux solution has a good control effect in the rainy season. Root diseases should be scraped off in time, and sterilized with 10: 20 times sterilization. The main pests of cherry are caterpillar, moth, leafhopper and pear net bug. According to the occurrence of the pest, insecticides such as imidacloprid, imidacloprid and Juanyiqing can be sprayed for control. Click to get more cherry tree planting techniques click to get more fruit planting techniques