To make peach trees have high yield and good quality, the following fertilization techniques should be mastered when fertilizing.
Early fertilization. Peach trees are the earliest fruit trees in the fruit trees in spring. Fertilization in spring should be sooner rather than later. Anyone who applied base fertilizer in September last year should pay attention to the application of pre-emergence fertilizer when the temperature rises after the beginning of spring. It is generally applied 15 days before the beginning of spring, which can not only compensate for the problem of insufficient or no fertilization after fruiting, but also timely supplement the deficiency of nutrients in peach trees. Generally, 0.5 kg of potassium, 0.3 kg of potassium and 0.2 kg of phosphorus are applied to each peach tree. It is best to mix with the manure and manure of manure, and use the rhizosphere top dressing.
The formula is full. Generally speaking, peach trees should be applied with a variety of nutrient-fertilizers. Otherwise, fertilizers and nutrients will be single, and yellow leaf and lobular constriction diseases will appear. Peach tree fertilization should be based on nutrient-rich and mature farmyard manure, combined with the nutrient elements required for each period of the tree.
Set a good position. The depth of fertilization should be 30 cm deep, which is convenient for the roots to absorb and utilize nutrients. The horizontal roots of peach trees are generally concentrated at a little distance from the periphery of the canopy. Therefore, the fertilizer should be applied to the root system slightly deeper and farther away, so that the root system is induced to develop in depth, and the growth surface and the fertilizer surface are expanded.
Generally, it is applied in the germination stage (early March), the hard core stage (mid-May) and the fruit expansion period of the peach tree in 2 to 3 times. For orchards with early defoliation or excessive loading in the previous year, extra-root fertilization should be strengthened. Spray 1%~3% urea solution 2~3 times before germination, spray 2 times urea solution after germination to mid-July, interval 7 days, then spray 0.3%~0.5% potassium dihydrogen phosphate solution .
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