According to the characteristics of different fruit bags, combined with different apple varieties and production purposes, determine the required fruit bags.
According to market demand, choose fruit bags: The premise of choosing fruit bags is to look at the market demand, promote the whole park, whole tree, whole fruit bagging, high-grade fruit sets of high-grade bags, mid-range fruit sets of mid-range bags, and general fruit sets of low-grade bags. In order to produce export fruit, it is necessary to set brand-name double-layer paper bags; to produce superior-grade fruit, you can set mid-range double-layer paper bags; to produce first-grade fruit, you can set low-grade double-layer paper bags and single-layer paper bags. And plastic film bags. The cultivation conditions, technical level, and economic ability are all poor. They can be plastic film bags and single-layer paper bags.
Look at the variety selection of fruit bags: gold and other yellow and green apple varieties, without coloring, the purpose of bagging is mainly to improve the fruit surface finish, prevent fruit rust, should be set of pure wood pulp paper bags or plastic film bags; Qin crown apples can be plastic film Bags; more easily colored red apple varieties such as the new red star, set of single-layer shading bags or plastic film bags; hard-to-color red apple varieties such as Red Fuji, should set high, mid-range double paper bags.
Choosing fruit bags due to climatic conditions: The best bagging effect can only be obtained if the fruit bags that are suitable for the local climatic conditions are selected scientifically. In areas with high altitude, large temperature difference, and strong sunlight, Red Fuji apples are well colored in single-layer paper bags and translucent plastic bags. In high-temperature, rainy plain areas, paper bags and plastic films with good air permeability and good drainage are required. bag.
Technical points
Apple bagging can not only reduce the incidence of apple ringworm disease, anthrax disease and other diseases, but also can effectively reduce the rate of fruit, in particular, can significantly reduce pesticide residues, and make the fruit surface smooth, thereby enhancing the quality of the fruit, Significantly increase the economic benefits of farmers. The main technical points of bagging are as follows:
Full-tree bagging, on-demand bag selection: All trees are covered as much as possible. After fruit thinning, it is better to use a high-grade bag on the south side of the fruit to produce high-quality fruit. All poor quality fruits that cannot be bagged should be removed. The whole tree bagging not only can guarantee the improvement of the overall production level, but also can reduce the cost of medicine and labor cost.
Bagging time and method: Red Fuji apples are bagged from May 15 to June 10, avoiding morning dew when one day is dry. When bagging, the fruit bag and the vent hole must be opened so that the fruit bag bulges into a lantern shape, and then the fruit bag is placed on the fruit. The young fruit should be in the middle of the bag and must not touch the inner wall of the bag. The bag should be tightly sealed. For a tree, we must first set the fruit on the upper part of the tree and then set the fruit on the lower part of the tree; first set the fruit of the inner part and then set the outer part of the fruit.
Supporting management
Through reasonable pruning, adjust the tree shape; balance fertilization and regulate nutrition; strictly prevent diseases and insect pests and reduce harm. In addition, if calcium deficiency occurs, calcium should be sprayed several times before bagging. 2 to 3 days before bagging, the whole garden must be sprayed with high-quality fungicides and insecticides to remove the ash from the bags. After bagging, it is necessary to strengthen the protection of leaves and fruits. Mainly to protect the leaves, alternate spraying fungicide, and a plan to prevent food-heart, lice and other pests.
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