Full crown regenerating method of defected apple tree form

Abstract

The invention provides a full crown regenerating method of a defected apple tree form. The method comprises the following steps of: 1, sawing off all the main branches 25-35 days before sprouting in the period of dormancy of apple tree, remaining the central trunk by the height of 1.2-2.7 m, wherein the saw bite of the main branch is close to the central trunk, the saw bite at the top end of the central trunk is at an angle of 45 degrees, and the saw bit is coated with a white emulsion mixed with a broad spectrum bactericide; 2, spraying lime sulfur mixture having a baume degree being 7-10 to the central trunk; 3, removing branch buds sprouting within 1m of the central trunk in the sprouting period; 4, when the new main branches grow up to 25-35cm, opening by an angle of 80-90 degrees, and when the main branches grow up to 60-70cm, selectively remaining 15-30 good main branches and fixing the opening angle in the range of 80-90 degrees by a rope; and selecting a strong, vertical branch as the extension branch of the central trunk at the top end of the central trunk. The full crown regenerating method is simple and feasible; with the method, standard trunk tree form can be obtained in 3 years; full crown regeneration of the tree body and the recovery of tree body growth vigor can be realized; as a result, the yield and the quality level of apples can be obviously improved.

Description

technical field [0001] The invention relates to a method for updating bad apple tree shape. Background technique [0002] The apple is a long-lived temperate deciduous fruit tree. During the production process, some of the main branches of apple trees in adult apple orchards often have insufficient number of main branches, or the growth potential of main branches of apple trees varies greatly, or the spatial distribution of main branches of apple trees is uneven, or the growth potential of extension branches in the center of apple trees is weak. Apple trees with insufficient main branches do not have enough fruiting branches, resulting in low yields. The growth potential of the main branches of apple trees varies greatly, resulting in unbalanced nutrient supply among the main branches, resulting in large differences in apple quality, and at the same time affecting the growth potential of the central trunk. The spatial distribution of main branches of apple trees is uneven,...

AI Technical Summary

Problems solved by technology

Apple tree plants with insufficient number of main branches, not enough fruiting branches, resulting in low yield

The growth potential of the main branches of apple trees varies greatly, resulting in unbalanced nutrient supply among the main branches, resulting in large differences in apple quality, and at the same time affecting the growth potential of the central trunk.

The spatial distribution of main branches of apple trees is uneven, reducing the effective fruiting space and resulting in low yield

The growth potential of the extended branches of the central trunk of the apple tree is weak, which will affect the balanced growth of the whole plant, resulting in low apple yield and large quality differences

It is difficult to renew the bad apple tree shape with insufficient number of main branches of apple trees, large differences in growth potential of main branches of apple trees, uneven spatial distribution of main branches of apple trees, and weak growth potential of extension branches in the center of apple trees by conventional pruning and renewal methods. form a standard trunk tree

At present, some high-branch multi-head grafting update methods are used, but there are problems such as high grafting cost, difficult plastic operation, and long time to form a standard trunk tree shape.