First, the clearing of fallen leaves in autumn, apple leaf spot, gray spot disease, pear black spot disease, grape brown spot, white rot, peach brown rot and other pathogens overwintering place is the debris of fallen leaves and weeds , should be burned to eliminate overwintering pests. Second, autumn and winter tillage garden autumn and winter soil deep turning, can destroy various pest nests in the soil, or the insect eggs, cockroaches, cockroaches, etc. turned to the surface to freeze to death, dry or eaten by birds; and reduce the invasion of pests and diseases Dye source. Third, the winter bark bark pest control red spider, roller leaf moth pests and rot disease bacteria, and more winter in the gap between the bark. Scrape rough skin, cracked skin, and diseased skin to prevent pests and diseases. Fourth, trunk white coated pest control winter fruit tree trunk white can prevent sunburn disease, but also prevent freezing injury, but also a variety of diseases and insect pests. Whitening agent formula: 5 kg of quicklime, 0.5 kg of salt, 15 kg of water, fully stir and serve. It is best to add 2 kg of lime sulfur stock solution and a little animal and vegetable oil in the whitening agent to prevent and control pests and diseases. Fifth, trapping pests to eliminate the use of pests on the characteristics of all over-winter selection, after the autumn in the fruit tree branches tied grass or sacks, according to the test, the apple fruitworm can be trapped to 47% -78% of the wintering larvae . Sixth, dormant spraying control disease on the deciduous fruit trees in the dormant period 1-2 times the oil content of 4% -5% diesel emulsion and Baume 5 degrees of lime sulfur, can prevent a variety of diseases.
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