Winter pear pest prevention and control should be put in place
In winter, it is the period when the disease and insect pests of pears are lurking in winter. The position is relatively fixed, which is a good time to kill pests and diseases and effectively reduce the occurrence of pests and diseases in the following year. More output in winter, less money in spring and good results in autumn. Fruit farmers can adopt the following technical measures based on the occurrence of diseases such as pear blight, anthrax, rot, scab, P. caterpillar, and spider mites. Autumn and winter deep-turning combined with fertilization to carry out deep-falling tree trays in autumn and winter. On the one hand, the wintering pests are turned out of the ground to allow birds to feed for food or freeze to death; on the other hand, the sick leaves and stalemates on the ground and hide in the withered grasses. The pests are buried underground, and they cannot be successfully exhumed and suffocated in the following year. White trunks painted with white trunks can reduce the occurrence of sunburn, and eliminate overwintering pear caterpillars and red spiders in trunks and tree gaps. The ratio of whitening agents is: 10-12 parts of quicklime, 2 parts of clay, 2 parts of lime sulfur concentrate, 1 to 2 parts of salt, 36 to 40 parts of water, and some pesticides can be added. Liquify the lime, remove the ash, pour the dissolved salt, pour the lime sulfur mixture and the clay, and mix well. The white coating is carried out before falling into the soil after deciduous, and it is appropriate not to lose and dry after coating, and not to fall off. Scrape or cut off the old skin and the diseased branches. Many eggs of insect pests lurk in the cracks and skins of pears and old trees. In the winter, scrape off the old skin of pears with a spatula or a sickle knife (be careful not to scratch the inside of the pears. Nappa), thus destroying the overwintering sites of P. sinensis, P. edulis, T. bracteatum, and red spider and other pests, can eliminate most of the pests and reduce the number of insect populations in the year. At the same time, in combination with winter cutting, the branches, buds, and stem branches of pests with hard moths, caterpillars, etc. were cut off and burned. The physical trapping and killing of P. sinensis, P. edulis, and other pests during the fall to the rough trunk or overwintering of the trunk can be used to trap overwintering pests by preliminarily tying grasses on the branches before the wintering of the larvae. After entering the winter, the grass was destroyed and concentrated. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Lung Function Meter Filter,Medical Spirometry Filter,Spirometry Bacterial Filter,Disposable Lung Function Meter Filter Hengshui Qifei Paper Products Co. LTD , https://www.hengshuiqifei.com