How to protect big cherry trees in autumn and winter

First, autumn management

1, sparsely populated. Sweet cherry is a light tree species. In order to ensure that the entire tree is airy and light-transmitting, some of the overlapping main branches or main branches that are not close to the main trunk that are not covered with space should be removed as soon as possible, and the main branches cannot be filled with space. Stand upright, lateral branches, appropriate short cuts, promote new branches, and form new branches.

2, pull the branches topping. For branches and branches with poor softening effect, the autumn branches are better than spring and summer branches, which can make all the buds develop well and reduce the erect branches. In order to ensure that the branches are substantial, picking up the hearts before and after is conducive to safe wintering.

3, weeding elimination. After the rain, we sprayed without trace + ethylene mixture to control weed growth. However, it is necessary to prevent the spray of medicament from spraying on the leaves to cause phytotoxicity.

4, loose soil fertilization. Fertilizer applied fruit tree fertilizer + potassium sulfate (4:1) 0.5 kg. 0.3% potassium dihydrogen phosphate was added for each spraying to protect the late leaves. In late October, the base fertilizer, human excreta + cow dung (or chicken manure) + sand was mixed and piled. After each 50 kilograms, it was applied 1.5 meters away from the trunk. Apply proper amount of water after each fertilization. After fertilizing and watering in the autumn, when the soil is not sticky, the whole garden will be commonly ploughed once to improve the permeability of the soil and be conducive to root growth.

5, prevention and treatment of pests. In the autumn, the bridge-building insects, caterpillars and peach leaf moths, etc., can be sprayed with 2.5% enemies to kill 3000 times solution and methamidophos 1000 times solution.

Second, winter management

1, early winter garden. In the early winter, timely cleaning of fallen leaves, collecting diseased fruits, diseased branches, etc., and burning or burying them centrally, eliminating the sources of overwintering diseases and reducing the occurrence of diseases and pests the following year.

2. The trunk is painted white. Whitening the trunk can avoid or reduce frost damage and sunburn. It can also eliminate the potential wintering pests in the trunk and bark seams. The trunk was painted white in early November. The whitening agent raw material is lime, salt, lime sulfur, water, and its ratio is 12:1:2:400.

3, Pei cover film. Low temperatures in winter have a greater impact on sweet cherries. Temperature conditions of -15°C will cause dry branches and wilting of underdeveloped shoots and weakly growing saplings. In order to ensure safe wintering, the 1-year-old saplings are planted at a distance of 50 cm to the north of the tree. The crescent moon is 1.5 to 2 meters long and 0.5 meters high. The mulching film covers the wind, cold, mulch, and drafts. The role. Two-year-old saplings are covered with weak growth. If they grow normally, they can be used only for mulching. As the age of the tree grows, crescent moons and membranes can be removed.

4, pouring a good frozen water. In mid-November, pouring frozen water began to be poured through the pouring feet to ensure the need for moisture in winter and spring to prevent winter drought and frost damage.

5, tree plate covered grass. For saplings over 3 years old, in order to reduce the thickness of the permafrost, postponed the germination period of the following year, and prevent the damage of the late frost, the grass can be covered with straw (straw, straw, weeds, etc.), and the thickness is 10-15 cm. Rear. Press around the edge of the canopy to prevent wind blows.

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