There is a reason why Red Fuji is not red

Red Fuji apples are light red or not colored, and there are many reasons. The first is related to the variety. The poor coloring of fruits is determined by the biological characteristics of the varieties themselves, and has nothing to do with environmental conditions. The second is related to the timing of harvesting. Red Fuji apple is a late-maturing variety, and it is generally better to harvest and color it in late October. However, some areas are harvested in late September. Even if they are colored, they are harvested too early and their coloring is not good. The third is improper use of fertilizer. Scientific fertilization is an important factor in the production of fruit trees. Nitrogen, phosphorus and potassium fertilizers are used in proportion. Otherwise, with nitrogen fertilizer alone, coloring is poor. Fourth, improper pruning, tree vigor growth is too prosperous, the leaves are numerous and shading, the utilization of light energy is low, and even the backlight surface is not colored. The fifth is the fall drought, soil moisture, air humidity, low temperature difference between day and night, is also an important factor causing poor coloring of red Fuji.

To solve the problem of poor coloring of Red Fuji apples, we must combine the above factors and join the seat. If it is a species problem, it can be replaced by a higher one and marry a good variety; if it is harvested too early, the harvest can be delayed until it is well colored and then harvested; if the fertilization is unreasonable, nitrogen, phosphorus, and potassium are proportionate. With the application; if it is prune unreasonable, in the fruit dormancy period, growth period can be pruned, adjust the lighting condition of fruit trees, is conducive to photosynthesis, vegetative growth and reproductive growth reasonable. If it is autumn drought, timely watering, increase soil moisture, to meet the needs of fruit tree growth, development, and can adjust the humidity of the air; day and night temperature difference can delay the harvest time, when the temperature difference between day and night, Red Fuji fruit coloring fast And then harvest.

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