Methods for controlling pests and diseases of bayberry gardens:
First, agricultural control.
1. Clean up the woodland. Most of the bayberry gardens are cultivated in grass, allowing bushes and weeds to grow, creating habitats for certain germs and pests. To this end, the weeds under the canopy of the bayberry tree should be removed uniformly before harvesting, and the shrubs and weeds between the trees should be removed together. In autumn and winter, the branches and leaves should be burned to reduce the source of pests and diseases. Its lurking place.
2. Care tree. Most of the cultivated Chinese bayberry have not undergone normal plastic trimming. Therefore, the height of the canopy is uneven, the branches are dense, and there are many dead branches, which provides a shelter for pests and diseases. To this end, it is necessary to clean up in time, cut off dead branches, diseased branches, dense branches, cross branches, etc., in order to increase the ventilation and light transmission of the tree, promote the tree body and improve the ability to resist pests and diseases.
3. Rational fertilization. Apply more farmyard manure and organic fertilizer, increase the application of potassium fertilizer, and do not apply fertilizer and nitrogen fertilizer.
4. Other aspects. Prevent mechanical damage to the tree during harvesting and cultivation, and reduce the chance of invasion of pests and diseases. Use grass trapping, lighting or sweet and sour moths, as well as artificially catching egg masses, larvae, pupa, reduce the amount of orchard insects, strengthen seedling transport quarantine and quarantine work.
Second, biological control.
1. Protect and utilize natural enemies. There are more natural enemies of pests in Yangmeilin. Such as ladybugs, small bees, fly-flying, grasshoppers, etc., they can maintain a relatively stable population under natural conditions, so use pesticides as little or as little as possible. This will not only protect the natural enemy, but also produce green food or organic food.
2. For the chewing mouthparts pests of the lepidopteran, such as the larvae of the poisonous moth, the dead leaf moth, the moth, and the like, bacterial agents (such as Bacillus thuringiensis, green worm, Beauveria bassiana, etc.) can be used for prevention and treatment. For the beetles and moth pests, parasitic wasps (such as Trichogramma, swollen leg bees, etc.) can be used for prevention and treatment.
Third, chemical control. In the case where the pests and diseases occur more and the damage is heavier, the chemical agents are used for prevention and control.
1, the crown spray. Master the principle that it is strictly forbidden to use drugs during flowering and young fruit. For scale insects and small moths, the peak of the second generation nymphs from August to October is sprayed with 95% oil emulsion 50-100 times liquid, washing powder 80-100 times liquid, etc.; , bag moth, leaf roller moth, etc. can be sprayed with 20% cypermethrin emulsion 2000-3000 times liquid; brown spot disease; carbendazim, dexamethasone, methyl thiophanate and other drugs rotation control; lobular disease 0.2% The borax water sprays the canopy.
2, punching injection. For insects such as scale insects and small moths, after harvesting the red bayberry fruit, the base of the main branch of the canopy can be perforated, and about 2 ml of systemic pesticides are injected into each hole to kill the pests by systemic conduction.
3, disinfection insurance. For cancer disease, branch rot, dry blight, etc., use a sharp knife to remove the diseased part, and then apply antibacterial agent and other disinfection protection.
4, soil application of drugs. For lobular disease, 50 to 100 grams of borax per plant can be applied at the canopy drip line, and then covered with soil.
5, the body spray. For termites, anthill powder can be sprayed on the worm body to make it poisonous and return to the nest.
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