Management of fruit trees before and after sleep

The deciduous fruit trees fall into the dormancy period of the fruit trees before the budding in the following year. At this time, almost all the fruit trees' pests began to hide in wintering dens and stay in hibernation. Therefore, this is the best time to prevent and treat diseases and pests of fruit trees once a year.

I. Cleaning the garden Some diseases such as soft rot, gray mold and downy mildew, and some insect pests such as spider mites, aphids, and green worms, are mostly hidden in dead branches, fallen leaves, weeds and gardens. Winter on debris. Therefore, the orchard should be cleared in time after the fruit is harvested or after it has fallen. First cut off branches and branches, dead branches, worms, and stagnant fruits on the tree; clean the fallen leaves and fruit under the tree; clean up the debris in the garden and bury it, destroy it, or make manure, so that it can basically be eliminated. Winter pests or germs in the sundries.

Secondly, garden beetles, peach borers, navy caterpillars, tawny owls, ground tigers, and yellow-fleshed frogs on deep-turned fruit trees all hide in the soil as adults, larvae, or pupa, and winterize. Some fruit trees suffer from diseases such as withering. Diseases, Verticillium wilt, and other pathogens hid under the soil in the form of mycelium, sclerotia and spores. Through wintering measures of the soil, its overwintering nests can be destroyed and exposed to the surface of the earth to be frozen to death. Tillage depth of 15-25 cm is appropriate, if too deep to easily hurt the roots. After deep-turning the tree disk, it should be watered in time and at the same time, enough basal fertilizer should be applied.

III. Eradication of Weeds Some pests, such as locusts, are hidden in the weeds and earth gaps in the fields for the winter. When the following spring season blooms, pests will then fly to the fruit trees. Therefore, eradication of field weeds can effectively eliminate the source of insects. This measure can be combined with the deep turning of garden soil.

Fourth, to strengthen the pest control facilities, some fruits, such as strawberries, the use of plastic greenhouses and other protective cultivation, to the overwintering pests to create a good winter conditions for survival, so strengthen the greenhouses within the pest control work to reduce the source of pests, It is of great significance.

Fifth, scrape off trunk trunk skin rough skin, skin subcutaneous, often red spider mite, hibiscus, pear borer, pear caterpillars and rot, dry rot, ring rot and other pests, pathogens overwintering place. You can use a less sharp knife to gently scrape the rough skin and skin. When scraping must use the tray to catch the scrapings, and then burned or buried deep in the scrapings, which can effectively eliminate the overwintering bacteria, pests and eggs. After scratching, it should be protected by medicaments.

6. After the tree trunk is coated with white in winter, white and white trunks and trunks will be promptly painted white after scraping rough skin. This will not only increase the pest control effect, but also help fruit trees to prevent freezing. Commonly used whitening agents are the following two types: lime sulfur compound and lime sulfuric acid copper compound.

7. Spraying Pesticides During the early spring buds and flower buds of all kinds of fruit sprout, it is the time when the pests of various fruit trees are damaged. At this point in time to spray the entire garden insecticide, bactericidal agents can effectively reduce the degree of damage in the orchard pests. Commonly used insecticides have 3 to 5 degrees of lime sulfur.

In addition, in order to improve the fruit tree pest control effect, hooking, puncture, and sealing techniques are also used, ie, using special wire hooks to reach into the hole of aphids to hook out or stab larvae that hide in the trunk and other larvae. Use whitening agent to close the cracks and caves on the trunk and cut off the wintering path of pests. Pests in older orchards are more important using this method.

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