To better reduce pathogens and prevent invasive diseases, China Agricultural Technology Network provides the following six key points for clearing the park:
1. Saw the large branches that have been rotted and are not saved. Remove them with a hand saw. Note that the kerfs should be smooth. If there is space, they can be bridged.
2. Cut the dead branches of pests and cut them off in time, take them outside the park, and burn them together.
3. Scraping is the removal of diseased skin and dead tissue and the removal of overwintering pests in cracks in the bark. The scraping time is best carried out when the sap flows, not too early or too late. The long-term wounds caused by the loss of long-lasting tree water, and most of the pests have no activity; late rot disease has spread hazards and pests have spread out. For the rot disease, it is necessary to scrape 0.5 cm at the skin, preferably in the form of a shuttle to facilitate healing. Thoroughly and thoroughly scraping old warts and rotenian tumors, leaving behind one tumor. The tumors of perennial and one-and-two-year-old shoots must be scraped. The depth is dominated by white trees and green trees. Don't get too deep and too thick, and concentrate the disease skin deeply. According to the survey, the scraping of skin scrapings has been reduced by more than 5%, and Hawthorn spiders rarely break out.
4. Coat all the kerfs, cuts, and culprits of all sizes to prevent the loss of water from the wound, prevent the invasion of bacteria, and promote healing. According to the survey, about 0.5 centimeters can be healed that year, the incidence of cutting kerf is no more than 1%, and the recurrence rate of old quails is less than 5%. It is also possible to test the Fuxing 500 times. According to relevant experts, the results are also good.
5. Clear all the sick branches, diseased fruits, and broken bark under the trees on the trees and clean them up outside the garden. The defoliation does not have to be cleared outside the garden and can be used as fertilizer. The organic fertilizer and chemical fertilizer can be used to dig deep and buried under 25 cm below the tree.
6.Spray co-spray twice for the first time when the flower bud just germinated. Spray 5Be lime sulfur once when the flower bud just germinates. The main component of the lime sulfur is released by the polysulfide to kill pests. The role of bacteria; Second, the lime sulfur mixture is strongly alkaline, permeable and erosion of the cell wall and insect pest wall wax layer, while strong alkaline is also not conducive to the survival of bacteria; Third, the lime sulfur spray formed on the tree A layer of protective film makes it difficult for foreign pests to invade while allowing the insects under the membrane to die without oxygen, and has a better control effect against overwintering pests. It has been proved in practice that the pests are also basically unresistent. The medicine simply cannot be replaced. The second time was the Flora Red Period, which sprayed 2000 times of Losbend plus 5,000 times of Fuxing, further killing the last remaining pathogens and overwintering pests.
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