The physical cross method to prevent diseases and pests of fruit trees is based on the hazards and habits of pests and diseases. It directly uses manual or simple tools and takes ten methods to perform physical and mechanical control. It can effectively prevent the environmental pollution caused by chemical control and reduce the drug residue of fruits. , The operation is simple and easy, specifically grasp the following cross: 1. Shear combined with winter and summer scissors, the diseased branches, eggs, sticks, nuts, fruit and other cut off. 2. In the vibrating season, the use of the pseudo-death feature of pests, such as beetles, is used to shock the tree to make it fall, and then to collect and kill; in the winter, when it encounters hazy days, it can hit the branches and cause the scale insects to shake off. 3. Clear to keep the orchard clean. In winter, combined with winter shears, thoroughly cleans the orchard to remove diseased branches, dried dead fruits, fallen leaves, etc., eliminating the source of sterile insects. In summer, the small damage to the jujube garden can be manually picked up in August to reduce the density of second-generation peaches. . 4. Scraping is performed to remove branches, dry skin, and rot lesions. Some pests, such as red spiders, have wintering habits in the bark joint and can be scraped off. 5. The brush has serious branches on the scale insects. The overwintering nymphs and oocysts can be brushed with a bristle brush to reduce the number of insects. This method can also be used during the growing season. 6. Temptation is the use of pests to seduce the strong tendency of a substance or condition, such as the use of lights to seduce small moths, adult beetles, bait and wood to kill beetles and weevils, and use insect sex traps to trap and kill pests, mainly including small peaches. Fresh-spotted moths, gold-grained moths, pear borer bugs, apple leaf roller moths, peach aphids, etc. 7. Resistance to early deciduous diseases, red spider mites, and small peaches all have underground overwintering habits, and they can be covered by mulch in early April, so that pathogens and pests will not grow on trees, and unearthed larvae and eclosion adults will be eliminated. Jujube trees and high-rising areas of the footsteps of the jujube trees piled up in early March to pile up mounds, dig isolation troughs or bundle unwound plastic on the tree trunks to prevent pests from growing on trees, and to collect and kill them every morning. 8. Capture is to manually capture and kill pests, such as catching adult larvae and larvae in the summer. 9. Turn over the combined fertilization, deepen the tree tray, remove the insects, and at the same time, the insects that squat on the ground cannot be overwinter to death because they are cleared to the surface. 10. Powdery mildew and rust should be popular during summer when high temperature and dryness are required. Helium, cockroaches, maggots, etc. also like to dry and windless environment, such as the use of high-pressure spray guns in the initial stage of the disease or the occurrence of the minimum, can effectively alleviate the pests and diseases. . (Shandong Province Yanggu County Forestry Bureau Hou Yizhong)
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