I. Major diseases and prevention techniques of peach trees 1. Root diseases and prevention techniques Root cancer is a major root disease on peach trees. The disease should be completely excised and the wound should be sterilized with 100 times copper sulfate or 5 Baume degrees lime sulfur, and then 8% antibacterial agent 402 solution 100 to 200 times liquid; or 70% thiophanate-methyl Wettable powder 500 times, 75% pentachloronitrobenzene wettable powder 600 times, 50% eutectic wettable powder 250 times, 40 formaldehyde wettable powder 100 times liquid irrigated root; Soil, with 2% copper sulfate solution or 70% thiophanate-methyl or 50% carbendazim 500 times, 70% 70% enemy dexamethasone to disinfect and sterilize the ground soil, and remove dead trees, the diseased roots burned. Branch diseases and prevention techniques Peach tree stem diseases mainly include rot (dry blight), dry rot, wood rot (cardiac rot), and fluid injection. Rot disease and dry rot are often caused by debilitating tree vigor. Therefore, strengthening tree management is the basis for preventing and curing trunk diseases. After the onset of disease, the diseased area should be scraped first, and the wound is disinfected and sterilized by using Lithosulfide solution stock solution or Guo Kangbao 20 to 30 times liquid and antibacterial agent 402 diluted to 50 times; wood rot and fluid gum disease are mainly infected by wounds. In disease, after removing the disease, wooden rot is applied with 2 to 3 times of rot must be applied to the wound, fluid adhesive is applied to the 25 times liquid carding agent, and is wrapped with a plastic film. After 1 week, 5 times of the rot must be used for prevention and treatment. . 3. Leaf diseases and prevention techniques The diseases that damage leaf fruit include leaf shriveling, perforation, brown rot, anthrax, scab (black scab), and gray mold. (1) Shrinkage disease: Shrinkage disease mainly harms the young part of peach trees and begins to develop in the early spring. Prevention and treatment, should be sprayed before the bud of peach 5 Baume degrees lime sulfur or 100 times liquid rot must be clear; flower buds red and Xie Hua spray 80% of Dasheng M-45 WP 400 to 600 times liquid or spray 38% of grain Fengnong 600 times, 50% Corbicum 500 times, 50% retort 500 times. (2) Perforation disease: Perforation disease is a common leaf disease on peach trees, including bacterial perforation and fungal perforation. Among them, bacterial perforation disease occurs seriously, and the leaves generally begin to develop in May. The dry conditions in summer are progressing slowly and in the latter part of the autumn, causing leaf shedding and dead shoots. For prevention and treatment, spray 5 bumeido lime sulfur before budding, spray 65% ​​mancozeb wettable powder 500 times liquid, 80% big wet M-45 wettable powder 800 times liquid, zinc sulfate lime liquor (zinc sulfate 500g + slaked lime 2000g + water 120kg), 3% Kezikang WP 600 times, 72% Streptomycin Sulfur Wet 3000 times solution. (3) Brown rot: brown rot is harmful to leaves, flowers, branch shoots and fruits, among which the fruit is the most affected, especially during the flowering and young fruit period, and the fruits are ripe at warm and humid environment serious. Prevention and control, completely clearing the stalemate in the peach dormant period, diseased branches burned; before spraying 5 Baume degrees lime sulfur, spray 65% ​​1 week after flowering Mori Sen Meng zinc WP 500 times, 50% more Dichole WP 800 times, 70% thiophanate-methyl WP 800 to 1000 times, 50% acetaminophen WP 1000 times, 80% Dose M-45 WP 600 to 800 times . (4) Anthrax: Anthracnose is one of the major diseases that harm the fruit. The rainy and damp environment during the young fruit period can cause a large number of fruit drop. For prevention and treatment, spray 2~3 Baumide Lithosulfurizer or Bactobacillus sp. 50 times solution when the petal is red (unexpanded), spray 80% Dashui M-45 wettable powder 800 times or 20% after spreading leaves. C. mobilis 3000 times solution, 50% bacteria solution 500 times solution, 70% thiophanate-methyl WP 600 to 800 times solution, 50% carbendazim WP 800 times, 25% carbon tetrachloride wettability Powder 500 to 700 times liquid, 50% retort special wettable powder 600 to 800 times liquid, 40% chlorothalonil wettable powder 1000 times, 80% anthrax Fumei wettable powder 600 to 800 times liquid. (5) Scab: Scab (black scab) mainly damages the fruit, followed by damage to the leaves and shoots. The temperature in spring and summer reaches 20-28°C, and it is heavier when it is wet and wet. In prevention and treatment, 5 Baumite Lithosulfide was sprayed before germination, and after 15 days of flowering, spraying 65% Mancozeb WP 500 times or 50% Carbendazim WP 800 to 1000 times every 15 months. 70% thiophanate-methyl wettable powder 800 times, 75% chlorothalonil wettable powder 600 times. (6) Botrytis cinerea: Botrytis cinerea mainly damages young fruit, the diseased fruit disease department produces gray mold layer, and finally shrinks and falls off. For prevention and treatment, timely removal of fruit on the ground and on the ground should be done in a timely manner to focus on deep-buried or burned, 70% thiophanate-methyl WP should be sprayed at the early stage of the disease and 800% should be sprayed after the deflowering. Liquid or 50% carbendazim WP 800 to 1000 times, 80% Dasong M-45 WP 800 times, 10% Polaroid WP 1500 times, 70% Metalaxyl WP 1000 Double liquid for prevention and treatment. Second, Peach main pests and prevention techniques 1. Prevention of sucking pests: sucking pests mainly include aphids, scale insects, whiteflies, thrips, stink bugs, leafhoppers, and cockroaches. Control can be used to select 40% chlorate chlorinated oil: 1000 times liquid, 10% imidacloprid wettable powder 5000 times, 50% malathion EC 1000 times, 10% annihilation 3000 ~ 5000 times liquid, 12.5% ​​enemy kill Emulsion 1500 times liquid, 10% bacillus 3000 ~ 5000 times liquid, 90% DuPont Vanishing WP 3000 ~ 4000 times, 48% 1500 times, 5% of antimony WP wettable powder 1500 ~ 2000 times liquid, 20% Chrysanthemum EC 2000 times, 30% Waxone WP 1000 times, 3% Agricultural 1500 times, 5% Green Park 2000 times, 40% chlorpyrifos 1000 times, 4.5% Cypermethrin Emulsion 2000 times, 20% Harvester WP 1500 times, 50% Bufeng WP 2000 times, 20% WP 2000 times, 1.8% Insect Buster 500 Times of liquid, 5% Nissopol 2000 times, 20% of WP 1200 to 1500 times, 40% of new Nongpo 1500 times. 2. Control of leaf pests: including moths, leaf roller moths, tussock moths, hawk moths, chafers, leaf miners and others. Control can be used to kill 10% to 3000 to 5000 times, 50% of malathion EC 1000 to 1500 times, 4.5% of Cypermethrin EC 1500 times, 50% of Camptotheca 1000 to 1500 times, 80% of Dichlorvos EC 1000 to 1500 times liquid, 25% Diflubenzuron No. 3 2000 times liquid, 40% double ringing gel suspension 1500 times, 40% New Nongpo 1500 times, 20% cypermethrin 3000 times. 3. Control of flower and fruit pests: including aphids and borers. Control can be used to spray 40% Shuanglingling 1500 times, 40% of the new Nongpo 1500 times, 20% peach poisoning 2000 times, 4.5% beta cypermethrin EC 1500 times, 30% Tao Xiaoling 2000 times , 50% kill medlar loose 1500 times liquid. 4. Prevention and control of branch pests: mainly P. chinensis. Prevention and control, first cut off the damaged branches, painted white trunk, to take the light to kill, kill adult worms, assassinate larvae, scrape eggs, kill larvae and other methods; use a needle injection of 80% DDVP EC 1000 times to block the fecal mouth; Incubate the larvae and spray 50% of the larvae to kill 1000ml of pine nut oil before breaking into the trunk. Operating Room Products,Surgical Adhesive Drape Sheet,Safety Surgical Gowns,Custom Banded Bags Zhende Medical Co.,Ltd , https://www.zhendemedicals.com