The management of the spring orchard is easy but important. The time for scraping the bark is best in spring. The main trunk, main branch and large lateral branch are mainly scratched to the depth of red and white. The depth should not be too deep, and it cannot hurt the xylem; Thorough spraying of bactericidal and insecticides after the orchard is finished.
1. Scrape disease and insect source in time
The most important work at the moment is to check for rot, dry rot, and ring rot (skin disease). You see wood or tree branches with wet spots, dry spots, and rough skins. You can't turn a blind eye. There may be a lot of germs. After the temperature rises, it begins to spread. It should be scraped here. However, this is only the part that can be observed with the eye, and then consider carefully, if it is just beginning to infect, has not developed to you can find the symptoms with the naked eye? Moreover, the number of hidden dangers that are not shown is far greater than the number of places where you can see symptoms, so scientific scraping is very necessary. It should be said that scraping skin is one of the best ways to prevent diseases without using pesticides. We know that most pests have the habit of wintering in the cracks of the bark, such as the adult spiders of red spider mites in the wing skin, cracks, and roots near the apple tree, etc. The winter velvet, deciduous, and subtilis are overwintering; the apple leafroll is borne by the third generation of the first instar larvae at the host's cut kerf, the trunk and branches of the fins, etc.; Larvae in the trunk, the main branches and rhizomes and other parts of the rough skin gap, deciduous or soil in winter. Therefore, our bark stripping measures are particularly important. After eliminating the overwintering state, it will no longer have its first, second or next generation corresponding to the growing season, and it will not be a shotgun (pesticide). But it has played an excellent control effect. But pay attention to the scraped old skin collection burned or buried.
2. Key prevention and control
The detected rot lesions should be treated with emphasis. Corruption, bactericidal, rotbiqing, 843 rehabilitation agents, etc. can be used for treatment; and those that are closely linked to the bark bark are coated with shellac, white coating agent, and cleaned. Dirty leaves, soil tillage. Insecticides can be used to intercept and kill pests during the tree growth process. If the trees are affected by the upper leaves of the trees and grasses, they can be glued and killed by sticking 2-5cm of glue on the trunk. White coating agent can reduce sunburn and freezing injury, and treat trunk diseases and pests, whitening time can be implemented after the defoliation to pre-sealing or early spring, mainly to protect the trunk, the main branch and the larger secondary branches and lateral branches. Its formula is: 12kg of quicklime, 2-2.5kg of salt, 0.5kg of soy juice, 36kg of water. Thorough cleaning of fallen leaves is also an effective way to eliminate overwintering pests. Ploughing the soil can play a good control effect against the pests that overwinter in the soil, such as peach borer, etc., and change the environment to freeze them to death and dry them.
3. Orchard spraying clear garden agent
After the spring temperature rises, all kinds of pests begin to move. After cleaning the countryside, fungicides and insecticides are sprayed in time to control the pests at the time of starting activities. One is the use of phoxim granules on the ground, Le Siben, etc. to control the pests on the tree; the second is the use of lime sulfur, wolfberry, Yiqing, rot, triumph, colorful, cotton and other bactericidal, insecticidal Agent. Pay attention to choose a kind of bactericidal and insecticide according to the specific conditions of your orchard. If you can spray the surrounding windbreaks at the same time, it will play a better role in pest control of orchards.
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