Fertilization skills in Autumn Orchard



Techniques of fertilization in Orchard
Fertilization in autumn is beneficial to the restoration of tree potential because of many fruits and high nutrient consumption. 
Therefore, timely topdressing and remediation in autumn can supplement trees in time, promote rooting and restore tree potential. 
Fertilization in autumn is beneficial to improve soil structure and improve soil fertility. Orchards in mountainous and hilly areas generally have thin soil and low content of organic matter. Fertilization in autumn helps to enhance the ability of trees to resist freezing and cold. The soil temperature is generally about 20 ℃ after autumn, so the wound of digging holes and cutting roots is easy, the roots grow quickly, and the number of roots is large. 
In addition, the green pressing material of fertilization in autumn is abundant, and it is easy to dig the soil. The addition of base fertilizer is beneficial to the accumulation of nutrients in the tree, increase the concentration of tissue cell fluid, enhance the ability of anti-freezing and cold resistance, and so on.
Technical points of fertilization in Orchard
    The time of applying base fertilizer in autumn is 2-3 months earlier than that in winter, and it should be carried out immediately after fruit harvest and clearing the garden. 

The types of fertilizers are mainly organic fertilizers, supplemented by chemical fertilizers, so as to achieve the combination of soil improvement and support, and the late and quick effects complement each other. 
The chemical fertilizer should not be applied too much available nitrogen fertilizer, otherwise it is easy to cause winter shoots. 
At the same time, it is necessary to mix 60~80kg, urea 0.15kg, calcium superphosphate or calcium magnesium phosphate fertilizer 3~4kg and 0.5kg. 

The method of fertilization can be used either by ditch method or by plate method. 
During ditch application, a ring is formed at the position of the crown drip line, the ditch depth is 40~50cm, the ditch width should be determined according to the amount of fertilizer applied, and the bottom of the ditch should be flat. 
Dry the fertilizer after watering, and cover the soil immediately after the water dries. 
Before fertilization, the roots exposed in the ditch should be cut flat along the ditch wall, the cut should be smooth, to prevent root hair, put crude fertilizer such as leaves and weeds on the bottom, the top layer of organic fertilizer, each layer of fertilizer, and finally cover the soil should be higher than the ground 25~30cm. 
Because of the staggered distribution of the root groups in the soil layer of the adult orchard, the disk application method can be adopted, that is, when raking the soil, it should be 8~10cm near the tree trunk, deep rake away from the tree trunk, sprinkle dry fertilizer, and then cover the soil.