Precautions before and after apple bag removal
Prevention of pests and diseases before bag picking
(1) The orchard before picking up the bag should be poured with small water to reduce the occurrence of daily burning.
(2) Before the bag is picked, the orchard should be sprayed to prevent pests and diseases. Two to three days before the apple is picked up, the orchard must spray the medicine, clear the garden, and create a safe environment for the apple before picking up the bag.
Diseases prevented in this period include: black spot disease, red spot disease, ring disease, anthracnose disease, and the like.
The pests prevented in this period are: the fruitworm, the leaf moth, etc.
Prevention of pests and diseases after bag picking
(1) After picking up the bag from the apple, when the weather is light or foggy, the fruit surface is prone to red dot disease. Therefore, the spray agent must be sprayed on the day or within two days after the bag is taken, which can effectively prevent red. Point disease.
(2) Prevention of bitter pox disease. After picking up the bag, the fruit is directly exposed to the outside. During this period, the spraying of foliar calcium fertilizer can be directly absorbed and utilized by the fruit, which is very effective for preventing bitter pox disease.
(3 Promote coloring. After picking up the bag, it may be affected by the climate, so that the fruit is not colored, especially the frosting is more difficult to paint; therefore, the foliar fertilizer is sprayed once before and after bag picking to promote coloring.
Picking time
There are many factors that do not color the fruit, and the early and late picking of the bag is one of the major factors.
Picking up the bag too early, the apples with green fruits are not colored, or if they are colored, there will be green heads, which will affect the quality. Apples that are picked too late, especially if the fruits turn yellow, are not easy to color, so the apple must Make sure that the time in the bag is sufficient, but not too long. Red Fuji apples generally take about 100 to 120 days to pick up bags according to the weather conditions.
Picking order
The orchard with red wax bag must be picked twice in the bag. After the outer paper bag is taken, the red wax inner bag is removed after 2~3 days. This interval is to give the fruit a part to adapt to the external environment. Time, if suddenly the inner and outer bags are completely removed, it is very prone to daily burning.
For a single-layer bag orchard, the bag body can be torn open in an umbrella shape 20 to 30 days before harvesting. Cover the fruit to prevent direct sunlight. After 7-10 days, remove the whole bag to prevent daily burning. , speed up coloring.
Use of flushing fertilizer
For trees with large amount of fruit and weak tree, resulting in fruit that is not ideal, it can be properly fertilized in early September. It is best to use the principle of “a small amount of meals†in August. The amount of each rush is small, and it is better to rush 2~3 times, which is conducive to promoting a constant growth of fruit, reducing fruit rust and improving surface light. Chelate calcium to ensure that the ratio of nitrogen to calcium is appropriate to avoid bitter pox.
Remind everyone that we must choose high-quality water-soluble fertilizers. Once we are eager to buy cheaper fertilizers containing hormones, we will increase the number of fruits, and the leaves will be green in a few days. I don’t know that the inferior fertilizer is mainly high. Nitrogen + hormones, will bring severe bitter pox disease, chicken claws, cracks, and easy to cause fruit surface light, not color, but also equal to the fruit trees, and the tree drained the stored nutrients It will be weak and will not be worth the candle. It should be noted that it is not recommended to apply fertilizer after September 10.
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