Bagging and fruit-growing can make the fruit surface delicate and smooth, bright and beautiful fruit, prevent pests and diseases, reduce the pollution of pesticides and dust, produce pollution-free high-quality quality fruit, and effectively enhance the fruit's commodity value. However, some fruit growers have not standardized the bagging technology and the measures have not been implemented. The problem of poor bagging quality and low fruit rate has emerged, and even results in high investment and low efficiency. Practice has proved that apple bagging yoghurt should also pay attention to the following technical points:
1, bagging to five elections
The tree and fruit used for bagging must be carefully selected. A good variety with high economic value. Two selected orchards with better management. The three elections are robust and well-structured. Angled (90-120), airy and transparent plants. Four selections of thinning and thinning fruit are in place, and a tree with reasonable load (20-25 cm spacing between fruits, 10,000 or so per mu). Five selected well-developed, fruit-shaped, oblique and sagging fruit, and then bagging is appropriate. This is the basic condition for ensuring good results.
2, bagging time should be appropriate
Bagging time should not be earlier or postponed. It will affect the development of young fruit prematurely and cause fruit drop. If the fruit surface is too late, it will be difficult to return green, the peel will be rough, and the appearance quality will be poor. The suitable time for bagging is 35-40 days after flowering (upper and middle June). The best day of the week is from 9am to 6pm. The morning dew does not dry and the rainy days are not bagged.
3, pre-bagging medication should be selected
After the apple fell to the bag, it was a time when the pulp cells were vigorously split. The fruit surface was young and extremely sensitive to pesticides. Improper use of pesticides or spray fertilizer during this period will lead to rind holes in the skin and form larger cork burrow holes, making the fruit surface rough, and even produce rust. In order to ensure that the bagged fruit surface is clean, smooth, bright. To improve the quality of fruit, the prevention and treatment of pests or foliar spray fertilizer should be done at 3 points in the young fruit period: First, the number of sprays should not be excessive, the concentration should not be too large, and the irritative effect of pesticides on the fruit surface should be minimized. The second is to avoid the use of pesticides and bactericidal drugs (such as pesticides containing copper ions and organic phosphorus) that are likely to cause fruit rust. Third, when foliar spray fertilizer, as far as possible without potassium dihydrogen phosphate, urea and other fertilizers can be applied nutrient solution fertilizer (such as organic humic acid fertilizer or amino acid compound fertilizer, etc.).
4, calcium supplement before bagging should be strengthened
Apples belong to fruit trees with higher calcium requirements, and calcium-deficient fruits are susceptible to bitter pit disease, pox spot disease, spot disease, and fruit cracking disease. The critical period of apple demand for calcium is 30-40 days after flowering, and the amount of transpiration of fruit after bagging is very small. The calcium that is transferred into the fruit by the pulling force of the transpiration stream decreases. Therefore, one to two weeks after flowering, the leaves should be sprayed with calcium 2-3 times before application, and calcium amino acid, calcium humate, calcium chloride, etc. should be applied in general to avoid physiological diseases caused by calcium deficiency.
5, bag quality should be guaranteed
The quality of fruit bags is an important factor in determining the success of bagging and fruiting. There are many types of fruit bags currently in use, including double-layer paper bags, single-layer paper bags, and plastic micro-film bags. However, the quality of the double-color paper bags with the best quality, such as Taiwan "Kita", Shandong "kaixiang", "love people", Hebei "Shunda", Shaanxi "earth", "Seiko." No manufacturer, no trademark, no inspection certificate, rough production, poor paper quality, no anti-bacterial treatment, poor water resistance, poor air permeability, inner bag waxing is not uniform, and other unqualified products, are not allowed use. The low price of plastic microfilm bags can reduce the investment of bagging, but its effect of improving the quality of fruit noodles is not as good as that of double-layer paper bags, and it is prone to sunburn. Especially in dryland orchards lacking irrigation conditions, it encounters hot and dry weather and sunburn phenomenon. More serious, it should be noted.
6, bagging operation should be standardized
Spray bactericidal and insecticidal agents 1-2 days before bagging, and the bags can be bagged after dried. When bagging, the fruit bag is first opened by hand so that the fruit bag is inflated. The longitudinal opening of the fruit bag is aligned with the fruit stem, the opening is riding on the fruit stem, and then the bag mouth is laterally folded, and then the pre-embedded wire is bent into a “V†shape to clamp the bag mouth. When operating, do not put the blade and the auxiliary tip into the bag; the zhasuo should clamp the paper bag stack, not twisting on the fruit stem, so as to avoid damage caused by fruit stems; fruit bags should bulge, young fruit hanging in the bag, Prevent the fruit surface from sticking against the inner wall of the paper bag and cause sunburn disease of apple fruit.
7, should be checked regularly after bagging
After the end of bagging and windy weather, it should be checked once. Check whether the bag day is tightly packed, whether the swelling bag is deformed and whether the young fruit sticks to the bag wall. Every 10-15 days, you should open the bag and check it once. Check whether there are any insects in the bag (insert the eggs or insects when bagging, or loose the bag mouth, and the harmful insects penetrate into the bag) and the diseases occur. Sunburn phenomenon and so on. If problems are found, the necessary measures can be taken according to the degree of harm.
1, bagging to five elections
The tree and fruit used for bagging must be carefully selected. A good variety with high economic value. Two selected orchards with better management. The three elections are robust and well-structured. Angled (90-120), airy and transparent plants. Four selections of thinning and thinning fruit are in place, and a tree with reasonable load (20-25 cm spacing between fruits, 10,000 or so per mu). Five selected well-developed, fruit-shaped, oblique and sagging fruit, and then bagging is appropriate. This is the basic condition for ensuring good results.
2, bagging time should be appropriate
Bagging time should not be earlier or postponed. It will affect the development of young fruit prematurely and cause fruit drop. If the fruit surface is too late, it will be difficult to return green, the peel will be rough, and the appearance quality will be poor. The suitable time for bagging is 35-40 days after flowering (upper and middle June). The best day of the week is from 9am to 6pm. The morning dew does not dry and the rainy days are not bagged.
3, pre-bagging medication should be selected
After the apple fell to the bag, it was a time when the pulp cells were vigorously split. The fruit surface was young and extremely sensitive to pesticides. Improper use of pesticides or spray fertilizer during this period will lead to rind holes in the skin and form larger cork burrow holes, making the fruit surface rough, and even produce rust. In order to ensure that the bagged fruit surface is clean, smooth, bright. To improve the quality of fruit, the prevention and treatment of pests or foliar spray fertilizer should be done at 3 points in the young fruit period: First, the number of sprays should not be excessive, the concentration should not be too large, and the irritative effect of pesticides on the fruit surface should be minimized. The second is to avoid the use of pesticides and bactericidal drugs (such as pesticides containing copper ions and organic phosphorus) that are likely to cause fruit rust. Third, when foliar spray fertilizer, as far as possible without potassium dihydrogen phosphate, urea and other fertilizers can be applied nutrient solution fertilizer (such as organic humic acid fertilizer or amino acid compound fertilizer, etc.).
4, calcium supplement before bagging should be strengthened
Apples belong to fruit trees with higher calcium requirements, and calcium-deficient fruits are susceptible to bitter pit disease, pox spot disease, spot disease, and fruit cracking disease. The critical period of apple demand for calcium is 30-40 days after flowering, and the amount of transpiration of fruit after bagging is very small. The calcium that is transferred into the fruit by the pulling force of the transpiration stream decreases. Therefore, one to two weeks after flowering, the leaves should be sprayed with calcium 2-3 times before application, and calcium amino acid, calcium humate, calcium chloride, etc. should be applied in general to avoid physiological diseases caused by calcium deficiency.
5, bag quality should be guaranteed
The quality of fruit bags is an important factor in determining the success of bagging and fruiting. There are many types of fruit bags currently in use, including double-layer paper bags, single-layer paper bags, and plastic micro-film bags. However, the quality of the double-color paper bags with the best quality, such as Taiwan "Kita", Shandong "kaixiang", "love people", Hebei "Shunda", Shaanxi "earth", "Seiko." No manufacturer, no trademark, no inspection certificate, rough production, poor paper quality, no anti-bacterial treatment, poor water resistance, poor air permeability, inner bag waxing is not uniform, and other unqualified products, are not allowed use. The low price of plastic microfilm bags can reduce the investment of bagging, but its effect of improving the quality of fruit noodles is not as good as that of double-layer paper bags, and it is prone to sunburn. Especially in dryland orchards lacking irrigation conditions, it encounters hot and dry weather and sunburn phenomenon. More serious, it should be noted.
6, bagging operation should be standardized
Spray bactericidal and insecticidal agents 1-2 days before bagging, and the bags can be bagged after dried. When bagging, the fruit bag is first opened by hand so that the fruit bag is inflated. The longitudinal opening of the fruit bag is aligned with the fruit stem, the opening is riding on the fruit stem, and then the bag mouth is laterally folded, and then the pre-embedded wire is bent into a “V†shape to clamp the bag mouth. When operating, do not put the blade and the auxiliary tip into the bag; the zhasuo should clamp the paper bag stack, not twisting on the fruit stem, so as to avoid damage caused by fruit stems; fruit bags should bulge, young fruit hanging in the bag, Prevent the fruit surface from sticking against the inner wall of the paper bag and cause sunburn disease of apple fruit.
7, should be checked regularly after bagging
After the end of bagging and windy weather, it should be checked once. Check whether the bag day is tightly packed, whether the swelling bag is deformed and whether the young fruit sticks to the bag wall. Every 10-15 days, you should open the bag and check it once. Check whether there are any insects in the bag (insert the eggs or insects when bagging, or loose the bag mouth, and the harmful insects penetrate into the bag) and the diseases occur. Sunburn phenomenon and so on. If problems are found, the necessary measures can be taken according to the degree of harm.
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