Saw: For the big branch that has been rotted and saved, use a hand saw to remove it. Note that the kerf should be smooth, and if there is space, it can be bridged.
Cut: The dead branches of the pests should be cut off in time, taken outside the park, and burned intensively.
Scrape: Scrape is to scrape the skin and dead tissue and remove the wintering pests in the cracks of the bark. Scrape time is best carried out when the sap flows, not too early or too late. Premature wounds cause long loss of water in the tree, and most of the pests have no activity; too late rot has spread the hazard and the pests have spread. For the rot disease to be scraped to the skin 0.5 cm, it is best to form a fusiform shape for easy healing. The old warp and the ring-shaped disease should be completely and completely scraped off, and no disease is allowed. The perennial and one-and-two-year-old diseased tumors must be scraped. The depth is white, and the small trees are green. Do not go too deep and too thick, and concentrate the diseased skin deeply. According to the survey, the rotted skin is completely reduced by more than 5%, and the hawthorn red spider rarely erupts.
Tu: Apply a healing agent to all size kerfs and cuts and sickness to prevent moisture loss from the wound, while preventing the invasion of bacteria and promoting healing. According to the survey, the year can heal about 0.5 cm, the incidence of cutting saws is less than 1%, the recurrence rate of old cockroaches is less than 5%, and it can also be tested 500 times of Fuxing. According to relevant experts, the effect is not bad.
Qing: All the diseased branches, diseased fruits and residual bark under the tree are cleaned out of the garden. It is not necessary to clear the leaves to the garden, and it can be used as fertilizer. Combined with the application of organic fertilizer and fertilizer, the pits are buried deep below 25 cm under the tree.
Spray: spray 5 waves of sulphur sulphur mixture when flower buds are germinated, because when the flower buds are just germinated, the main component of the stone sulphur mixture is hydrogen sulfide released by calcium sulphide, which has the effect of killing pests and rickets; The mixture is strongly alkaline, can penetrate and erode the cell wall of the pathogen and the wax layer of the body wall of the pest, and the strong alkalinity is also not conducive to the survival of the pathogen; the third is to form a protective film on the tree after the spraying of the stone sulfur mixture to make the foreign disease The insects are difficult to invade and the diseased insects under the membrane can not get oxygen and die. It has a good control effect on the wintering pests and diseases. It has been proved that the pests and diseases are basically not resistant to them, and the medicines on the market cannot be replaced at all.
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