The amount of basal fertilizer should be based on the age, vigor, amount of results, and type of fertilizer. In general, the amount of nitrogen fertilizer should be less, the proportion of phosphorus and potassium fertilizer should be large, and organic fertilizer should be more. High-quality decomposing farm manures, pigs, cattle manures and other organic fertilizers, bio-organic fertilizers, and microbial fertilizers should be used. Organic and inorganic compounds should be combined. Appropriate amount of compound fertilizer or phosphate fertilizer can be added. Never use fertilizers containing chloride ions to avoid lowering. Fruit sugar content is not easy to store.
When fertilizing in autumn, the cherry saplings below 3 years of age are in the period of crown enlargement, and their nutrient growth is strong. The amount of nitrogen needed is more, and nitrogen fertilizer should be used as the main component to assist the appropriate amount of phosphate fertilizer to promote crown formation. General young plant strains of human waste 30 to 50 kg or 100 kg circle. 3 to 5 year-old first-fruit saplings, tree growth from vegetative growth into reproductive growth, an increase in the number of flower buds, pay attention to nitrogen control, phosphorus, potassium, general strain applied 50 to 100 kg of organic fertilizer, and mixed in 2 ~ 3 kg superphosphate, 0.5-0.8 kg urea, 0.2-0.3 kg borax, 0.2-0.3 kg ferrous sulfate.
Trees above 6 years of age enter the full fruit period. The tree consumes more nutrients and the amount of fertilizer is increased every year. Nitrogen, phosphorus, and potassium are needed. However, potassium fertilizer should be added during the fruit growth stage to increase fruit yield and quality. The number of high-quality chickens, pig manure or human excreta can be less, and the amount of compost composted with weeds, leaves, etc. will be more. Human excrement 60 to 80 kilograms, or farmyard manure, pig, calf manure 100 kg per plant, or circling 200 kilograms; pure chicken manure 23 to 30 kilograms per plant, cake fertilizer 30 kilograms per plant.
Fertilization method:
The cherry tree is not well developed in its vertical roots, and its roots are distributed shallowly in the soil, but its horizontal roots are well developed. The saplings can be applied to a ring-shaped groove, and at the periphery of the canopy, projections are made by digging 50 cm deep and 40-50 cm deep. For large trees, in order to reduce the root damage, it is best to fertilize with the radiation groove, that is, to dig the radiation groove 50 cm away from the trunk, to narrow the width outside, shallow inside and outside depth, to minimize root injury. The width and depth of one end near the trunk is 30 centimeters, and the distance from the end of the trunk is 40 to 50 centimeters. The length of the ditch is more than about 20 centimeters from the canopy projection. The number of ditch is 4 to 6, and the position of the fertilization ditch should be changed each year. When fertilizing the landfill, fill in the ditch
The 20-cm-thick crop stalk is covered with 20 cm of soil, and then the fertilizer and soil are uniformly mixed and applied into the ditch. After the fertilizer is applied, it is watered and the fertilizer is promoted by water. After the water seeps, the pit and the trench are sealed with soil. Pay attention to avoid spreading the whole garden when fertilizing and cause the roots to rise.
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