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For bagged orchards, there are two points to note in the winter of the previous year: First, to strengthen the tree vigor through the winter shear, too long and thin branches and dense branches must be cut off; second, to facilitate the future bagging Operation, fruit trees should not be too high, generally from the ground to the height of the treetop control in about 2.5 meters more appropriate. After the fruit trees bloom in spring, they can be cut once more to reduce the tidbits, so that the fruit trees will be less blooming and blossoming.
The second job to be done before bagging is to thin and thin the fruit. Strict thinning, thinning, fruiting and reasonable load not only can prevent the phenomenon of size and year, maintain a robust tree, but also can prolong the effective economic life of fruit trees. At the same time, thinning and fruit thinning are important technical measures to improve fruit quality. Sparsions should not be late as soon as possible. Elimination of some dense inflorescences and weak inflorescences; retention of robust, well-placed inflorescences, leaving only intermediate flowers and one side flower per inflorescence; manual fruit thinning begins 7-10 days after flowering, and is completed within one month after flowering; Early flowering varieties with high fruit setting rate and poor management of fertilizers and water, severe disease, severe fruiting, and weak tree vigor can be sparse; species with late flowering, low fruit set, heavy fruit weight, and fruit trees with low fruit trees can be appropriate. Late sparse. When fruit thinning should be selected to leave the fruit shape of the correct center of the fruit, leaving more fruit in the long fruit and fruit growth down the top of the fruit, sparse small fruit, disease and fruit, tip fruit, deformed fruit and fruit stem short and upward growth of the fruit.
The best time for apple bagging is generally about 2 cm in diameter when the apple grows to be as big as a thumb. Early maturing varieties such as Tsugaru, Dora, and U.S. 8 can be bagged 10-15 days after flowering. Late-maturing varieties began to be bagged 15-20 days after the fall of Red Fuji apples, and were bagged before mid-June. During the first 2-3 days of bagging, the whole orchard shall be sprayed with bactericide in a fine manner, focusing on fruits, and the degree of atomization shall be high, so that the effect of pest control and disease prevention is better, and the spraying of bactericides mainly controls the early stage. Deciduous disease, ringworm disease, aphids and so on.
In addition, Apple is particularly sensitive to calcium from the time of bagging to bag extraction. It is easy to cause black spot disease and pox spot disease due to calcium deficiency. Therefore, calcium supplementation must be taken care of during this period. At this time, “Nongda University†can be used. The brand is high in calcium, magnesium and magnesium. The product is rich in calcium, magnesium, and potassium, as well as trace elements such as zinc and boron. When applied, it can be flushed with water, which is easy to use and effective.
Peasants' friends must master the time for bagging. The bagging time in one day should be 8-12 am and 3-5 pm. It should be avoided that the morning dew does not dry, the high temperature in the noon and the dampness in the evening are 3 stages, and it is not suitable for the bagging in rainy or foggy days. The main purpose is to prevent rain and dew from forming fruit rust in the bag and affect the quality of the fruit.
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Apple bagging management technology
The apple tree is the most critical period for management of orchards in the year before it is spent until it is bagged. It is also the most important link in the production of high-quality and high-grade fruit. Therefore, it is necessary to strengthen the management during this period. Orchard management before bagging should focus on strengthening the work of plastic pruning, thinning and fruit thinning, and pest control.