"six-character method" opens the angle of the main branch of young apple trees
In the winter shaping and pruning of young apple trees and early fruiting trees, according to the structural requirements of high-yield trees, the angles of the basic main branches are as follows: base angle 60 degrees, waist angle 65 degrees, tip angle 40-45 degrees. The ideal angle can not only bear fruit at the right age, high yield in the early stage, but also make the tree skeleton firm, prolong the fruiting life and prevent premature senility. Mastering "support, pulling, falling", skillfully using "top, change, pedal" and adjusting the angle of main branches are the basis for young apples to form a high-yield tree structure. Support: is to use a stick to support between the central trunk and the main branch to increase the angle of the main branch to meet the requirements. When supporting branches, cut both ends of the stick into ">,
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Five methods to control apple gibberellin
Seedling quarantine: Apple small gibberellin is the quarantine object, which can be transmitted to the new area with the seedlings. Therefore, the quarantine work of seedlings out of the nursery should be strictly strengthened to prevent spread. Protect natural enemies: in the mature larva and pupa stage, there are two kinds of parasitic wasps and one kind of parasitic fly, and the parasitic rate can reach 36% in orchards that are not often sprayed.
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How to manage "postpartum" apple trees
Apple is a popular fruit. If the apple is neglected to manage after picking, the output will decrease year by year. If properly managed, it can not only reduce the harm to fruit trees caused by the cold winter, but also lay a foundation for high yield in the coming year. First, the quick application of "postpartum" fertilizer consumes a lot of camp during the fruiting period.
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