The pruning of apple trees in winter is an important measure to adjust the tree structure and regulate the distribution of nutrients, and it needs to be treated with caution. In winter cuts of fruit trees, whether it is their own pruning or pruning, it is necessary to adhere to the principle of "Four No Hands."
One is that there is no pruning plan
In the case of an orchard cut in the winter of fruit trees, even if it is an orchard, there are major contradictions and minor contradictions. Therefore, before pruning, we must first establish a pruning plan in conjunction with the status of orchards and outstanding issues. To rashly prune in the absence of a plan may be counterproductive. The formulation of the pruning plan should consider the following elements: fruit tree species, age, shape, growth condition, result condition, length, density, number of flower buds, fruit tree trimming response in recent years, etc.
The second is that there is no good cut, no saw
In order to save money, a considerable number of fruit growers still buy cheap scissors and saws, which cost about 15 yuan each, and some are about 10 yuan. Such scissors and saws are very laborious to use. The clipper often clips the skin, the saw often clips the saw, and sometimes Saw the blade, and the saw blade is rough and difficult to heal. If you use good scissors and saws, not only do you cut the tree and save energy, but also the dry living quality is high. The cutting, slicing is smooth, light, and smooth. As with shaving, there is no tearing phenomenon, the wound is easily healed, and the cut and saw cut Protective agents are saved. With a good scissor and saw for a winter job, the saved manpower is enough to buy l sets of scissors and saws. As the saying goes, "people can't get tools faster."
Third, there is no wound protection agent
Apple trees need to be cut and sawed in a timely manner. Exposure for more than half a day will dry up. After 1 to 2 days, it will dry out. After a rainy season, it will become moldy, dry and suffering from rot. Normalized operation should be done after cutting one or several strains, followed by a wound protection agent. If the wound diameter is more than 1 cm, apply evenly on it, and then paste it with clean plastic paper. The effect of red bag and newspaper is excellent. Generally about 2 cm in diameter wounds can heal in the year.
Fourth, there is no disinfectant
In recent years, apple tree virus disease has spread rapidly, such as apple tree blossom disease, apple tree mosaic disease, etc., and it can spread from several trees to the entire garden in a few years, seriously affecting fruit quality and selling price. Pruning tool contact infection is an important method of transmission of viral diseases and must be highly valued. Trimming trees with viral diseases, the general practice is to mark the virus-bearing tree with paint and leave it for a final cut. Cut the normal tree first, and after the disinfection, cut the virus tree, cut it and saw it with a disinfectant for 1 time. Disinfectant can be used 2% to 5% fire alkali, 3% to 10% disodium phosphate, 75% alcohol and potassium permanganate solution soak for 1 minute. Virus and decay trees can also use another tool to prevent transmission.
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