Three look: one look at tree vigor: for fruit trees with weak vigor, the amount of fertilizer should be increased appropriately; for fruit trees with nutrient deficiency, medium and trace element fertilizers should be applied in a targeted manner; young trees and fruiting trees should be distinguished Fertilize. Second, look at the soil nutrient content: through the agricultural department to conduct soil tests, understand the level of each nutrient content, and make up for what is lacking and how much is lacking. Three-year target output: Generally speaking, when the target yield is high, the amount of fertilizer applied in autumn is correspondingly larger; when the target yield is low, the amount of fertilizer applied is correspondingly smaller. Determine the target output, based on the average output of the orchard in the first 3 to 4 years, increase the output by 10% to 15% (this method can be used for orchards that enter the stable fruiting period).
Three choices: First, choose a good fertilizer variety: According to the content of available nitrogen, phosphorus, and potassium in the soil, and on the principle of supply and demand balance, choose a compound fertilizer with an appropriate ratio of nitrogen, phosphorus, and potassium. At the same time, fertilizers with different characteristics should be selected according to the pH of the orchard soil. The second is to choose the right amount of fertilizer: based on the soil test, calculate the amount of fertilizer according to how much fertilizer the fruit tree needs. The third is to choose a good fertilization method: this is very important in the current orchard production management. Common fertilization methods include strip furrow method, circular furrow method, radial furrow method, and hole method. The first two methods are suitable for autumn fertilization.
Three combinations: one is the combination of organic fertilizer and fertilizer; the other is the combination of macroelement fertilizer and trace element fertilizer; the third is the combination of fertilization and watering.
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