Fruit trees should be fattened in spring.
Fruit trees need a lot of nutrients for germination and flowering. Therefore, fertilization in spring is very important. Most fruit farmers are also used to topdressing in spring. However, when the spring roots are dormant, the root cell vigor is enhanced, the growth rate is accelerated, and the root epidermis is young. At this time, the fertilizer is sensitive to the fertilizer, which is easy to cause fertilizer damage. The young leaves and buds of the tree are atrophy, dry, flower and young fruit. Atrophy and shedding, and even the entire tree death phenomenon.
To avoid fat damage, you can use the following methods:
The first choice is the fertilization method that is chosen correctly. At present, in the actual fertilization of fruit trees, farmers often use acupoints (4 holes in 4 directions around the tree), radiation ditch, annular ditch fertilization or whole garden application. However, the author generally does not recommend the use of acupoints, especially peach, apple, citrus, apricot and plum, but also other shallow roots. Fruit tree fertilization is best applied in combination with decomposed soil and fertilizer. When using annular groove and radiation ditch, pay attention to the application of too deep or too large a distance; the fertilization of the ditch should not be fertilized in the direction of extension of the root (in contrast to the direction of the big branch), preferably fertilization between the branches; non-repetitive fertilization ( The fertilization area should be changed every year); the fertilization site should not be too close to the trunk. Secondly, the correct choice of fertilizer, according to the stability of fertilizer and the effect of fertilizer on fruit trees, the probability of occurrence of fertilizer accidents is generally ammonium bicarbonate, ammonium chloride, ammonium sulfate, unfertilized farmyard manure, sulfur-based compound fertilizer, sulfur base Compound fertilizer, etc.
If there is fat damage after fertilization, it should be remedied in time. Find the corresponding big root in the direction of the extension of the symptoms showing the symptoms of fat damage. If it is found that the root part becomes black and rot, it can be scraped off with a knife; if the root is rot seriously, the victim part can be cut off and rotted. To the trunk, you can cut off the roots from the main trunk and dry the roots for 1 to 2 days, especially to avoid watering.
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