Apple bagging can significantly improve the quality of the appearance of the fruit and promote the bright color of the fruit. It is an advanced and practical technology for producing high-grade commercial fruit and increasing the income of farmers. High-quality orchard bagging can significantly promote fruit coloring, increase fruit surface finish, reduce pest damage, reduce hail and other mechanical damage, reduce pesticide contamination and residue, and increase fruit product value. However, according to our many years of investigation and investigation, there are still many problems. Therefore, combined with the actual production, to remind the fruit farmers bag before and after the "ten attention."
What should you watch before and after bagging?
First, pay attention to timely spraying bagging, pay attention to protect the leaves.
Bagging has the effect of preventing diseases and pests, but some pests have invaded the fruit before bagging. If they are not eliminated, infected pests will continue to harm the fruits in the bag and lose the significance of bagging. This period must be regularly sprayed and sprayed fertilizer, which on the prevention and treatment of diseases and insects, improve the fruit setting rate, increase the weight of a single fruit, to prevent the lack of factors have a great effect.
Second, pay attention to reasonable load.
Strictly thinning the fruit, when the fruit is set, leave a fruit at 20-25 cm, leave the fruit at the center, and fruit with a long fruit stalk, and discard the small fruit, the flat fruit, the glutinous fruit, the sky fruit, the pest fruit, and the wounded fruit.
Third, pay attention to science supplement fertilizer.
To increase the amount of organic fertilizer applied, at the same time, pay attention to balanced fertilization, phosphorus and potassium control, especially in the middle and later stages of application of potassium and phosphate fertilizers, combined with sprayed foliar tree fertilizer, is conducive to fruit coloring and anti-sunburn .
Fourth, pay attention to specification technology.
When the fruit bagging operation technology is not standardized will result in low yield of bagging fruit. When bagging, strict sealing is required to prevent pests from entering the bag to propagate harmful fruits and to prevent liquid medicine and rain from entering the bag and contaminating the fruit surface. When bagging, do not make the fruit bag close to young fruit, so as to avoid fruit surface roughness, fruit rust, and avoid sunburn.
Fifth, pay attention to Conrad's whiteflies.
Conrad's whitefly gathers in the depression to suck the fruit sap, causing black spots and is covered with white wax powder. Can also be through the hole, bag hole into the bag hazard, in the orchard bagging 1-2 years lighter, but year after bagging rate of up to 40% or more, bagging should be sprayed before killing Converse mealybugs. In mid-late and late July and late July, the nymphs of the first and second generations are in their peak period. At this time, they should be prevented and controlled, and the bag should be tightly attached when bagging.
Sixth, pay attention to supplement calcium.
In recent years, many nutrition experts have studied that: the effect of calcium on apple quality is far more important than nitrogen, phosphorus, potassium, magnesium and other elements. Therefore, calcium plays a decisive role in the quality of bagging apples. Before and after bagging, spraying calcium fertilizer should be applied to the fruit trees in order to reduce the occurrence of physical diseases such as bitter pit disease and water heart disease.
Seven, pay attention to choose a good fruit bag.
The quality of the bag depends on the quality of the bag and the manufacturing process. The correct selection of bags and the selection of bags are another key to the success of bagging.
8. Pay attention to the overall level of the orchard.
The apples produced in high-grade double-layer paper bags are brightly colored and delicately priced. However, not all orchards are suitable for high-grade paper bags. It has a lot to do with site conditions and management levels. An orchard with an altitude of 600m above sea level, a high content of organic matter in the soil, a well-managed tree, a robust tree, and a high-grade double-layer paper bag should be selected. For apple sub-optimal areas, especially for orchards whose management can't keep up with and pests and diseases are heavier, except for strengthening management, a good quality single layer bag or plastic film bag is suitable for low cost, large effect, and can effectively improve. Fruit product rate, increase the economic efficiency of orchards.
Nine, pay attention to supporting technology.
Check the condition of pests and diseases in the bag at any time; timely check the condition of bagging of fruit bags; remove yellow and pressed leaves. The bactericide should be sprayed once or twice a day before picking the bag to prevent the germs from infecting the bag. After the bag was taken, the silver reflective film was laid in time, and the leaves and fruit were picked timely.
Ten, pay attention to appropriate period, scientific harvest.
The order of fruit picking is top, bottom, front and rear. The bagged fruit skin is thin and tender, and during the harvesting and handling process, care should be taken with care to reduce touch, pressure, thorns, scratches, etc. To harvest and grade.
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