Second, fertilizer should meet the needs of nutrients. In the application of organic fertilizer on the basis of topdressing fertilizer to meet fruit tree flowering, fruit setting and shoot growth on the nutritional needs. The amount of topdressing can be determined by the soil, tree vigor, age, and yield. Generally, the young saplings on fertile soil do not have top-dressing, and the weak saplings on thin-soiled soils may be top-dressed. In the initial result tree, 0.5 to 1 kg of ammonium sulfate or 25 to 30 kg of human fecal urine is applied to each plant. Fruit trees in full fruit period, with 1.5 to 2 kg of ammonium sulfate per plant or 50 to 100 kg of human fecal urine per plant, supplemental phosphorus and potassium fertilizer if applicable, 2.5 to 5 kg of superphosphate per plant and 5 to 10 kg of plant ash . In this way, not only can the yield increase, but also the fruit quality can be improved and the tree vigor can be increased. In the middle to late March and early April, watering is combined with topdressing. Because the temperature is still low at this time, the amount of irrigation should not be too large, so as not to reduce the temperature and affect the development of the root system. For orchards that have not been filled with frozen water before the year, they should be watered in time to facilitate the germination, flowering and fruit setting of the fruit trees.

Third, timely cutting before flowering. Before the flowers are cut, it is an effective measure to correct winter shear errors and compensate for the destruction of the original winter cut tree shape due to climate and mechanical damage. This measure can adjust the proportion of flower buds and leaf buds and coordinate the relationship between growth and results. For the newly emerged saplings, flower buds should be retained as much as possible to alleviate the vegetative growth; for the young tree of the fruit period, flower buds should also be retained to obtain a certain amount of yield; for the fruity saplings, flower buds should be The proportion of leaf buds and buds is 1:3 to 1:2, and flower buds are strictly controlled. The unbalanced forces of the backbone trees and branches can be adjusted by the difference in the amount of preserved flowers. The strong ones should spend more time on the flowers and the weaker ones should spend less on the flowers. It should be noted that the apple flowering season often encounters the hazards of low temperatures, high winds, and late frosts, affecting normal pollination and fruit setting. Flower buds should be left as much as possible until the fruit set is established.

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