Apple Tree Winter Cut Note
The annual winter cut of the fruit tree is about to begin. Then should the apple tree pruning winter pay attention?
First, the occurrence of serious rot disease and the management of extensive orchards, should delay the winter cut time, from winter to spring cut. According to a study by Professor Cao Qiangqiang, a post expert at the National Apple Industrial Pest Research Office and a professor at Hebei Agricultural University, in the cold winter months, as long as there is snowfall or continuous foggy weather, water vapor appears on the bark surface, and rot bacteria can reproduce and infect. Extensions. The tree was dormant and the rot germs did not sleep. After several years of research and investigation, it has been found that 60% to 70% of rot rots are caused by cutting kerfs during winter cuts and bark injuries when trees are used. Due to the cold winter sawn cuts are not easy to heal, and it is easy to cause dead piles. When the pruning is done, the trees are easy to injure the bark. In addition, careless protection of the cut saws and wounds creates a favorable invasion for the rot. Dyeing conditions, so the pruning should be changed from the traditional December to the following January winter cut to the spring shear 2-3 months as well.
Second, disease tree and tree use pruning tools should be separated to avoid cross infection. The pruning shears of the rotted tree are trimmed and the other trees are cut. In the second year, 60% to 80% of the saw cuts will have rot. Especially in recent years, the Apple Facial Virus has spread rapidly. After cutting the scissors of the Facial Virus Tree and cutting other trees, it is easy to infect it. For this reason, the Facial Virus Tree should be marked and the pruning tool should be used separately to avoid it. Man-made infections.
Third, in sunny weather, branches are not trimmed when the tree is hung, the trimming tools are to be disinfected, and the large sawn cuts should be timely coated with the thiophanate-methyl healing agent.
Fourth, pruning should be thorough, cut branches should be promptly cleaned up, shipped out of the park, the best from the park more than 3 kilometers, in particular, the residue or debris to be buried or burned.
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