Winter shears are for shaping, shaping is to let the fruit trees ventilate and transmit light, and only the orchard with ventilation and light can produce red and big good fruits. Regarding the winter shears of kiwifruit mature trees, the experts summarized the following four evaluation criteria:
Consistent
The selection of the result mother branch is the core pruning requirement of winter shears. According to the pruning technical standard of “multi-buds and less branchesâ€, the result is that the mother branch is dominated by the middle branch. For the delicious variety, the Zhongyong branch is a branch with a base thickness of 1 to 1.5 cm, strong branches, high degree of lignification, and full and full buds.
The meaning of the uniformity of the branches means that the thickness of the branches is as close as possible, and the thickness of the branches cannot be too large, and even the nature of the branches is different. The uniformity of the branches is the basis of the same germination, uniform flowering and consistent fruit setting.
Quantity matching
The number of mother branches in the winter shearing is determined according to the area occupied by the individual plants, and the winter crops are pre-scheduled according to the annual yield.
In general, when the winter shears, the amount of the mother branches is 1.5 to 2.0 per square meter, and the specific amount is appropriately increased or decreased depending on the tree potential. Appropriate retention results The amount of mother branches is the basic guarantee of yield. If there are too many branches, the inefficient consumption will increase and the yield will decrease.
evenly distributed
The uniform distribution of the mother branches results in the premise of balanced growth of the canopy. No matter whether it is a single-dry umbrella-shaped tree or a dry two-vine tree shape, the result of the winter cut is that the mother branches are evenly distributed on the frame surface, and there is no large blank area or excessively dense branches.
Length is close
After winter shearing, the length of the mother branch should be half of the cut line spacing. If the adjacent two rows of trees keep half of the line spacing, the frame surface can be basically covered. For stronger branches, you can also exceed half of the line spacing, but most of them reach half the line spacing, and the rack surface can be filled. The yield is determined by the number of buds on the frame.
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