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Peach tree flow prevention comprehensive prevention technology
Colloidal disease is a common branch disease in stone fruit trees. Causes of the disease include non-invasive and invasive. The former occurs in all peach producing areas, and is a common physiological disease; the latter is caused by fungal infection. The light is debilitated and the severe branches die. Peach non-invasive plasticity disease: mainly due to frost, frost damage, pests and diseases, damage, excessive or insufficient moisture, improper fertilization, excessive trimming, excessive results, soil viscosity or soil acidity caused by high causes. Older peaches suffer more. Young trees have a mild disease. To prevent and treat non-invasive styrorrhea, we must first strengthen cultivation and management, increase tree vigor, pay attention to orchard drainage, increase organic fertilizer, improve soil, reasonably trim, and reduce trunk wounds. At the same time, we must promptly prevent and treat pests that have eaten branches and stems and prevent insect damage. In the late March to early April, when peach pods and peach aphid are hatched in large quantities, they should be sprayed with 50% phoxim emulsion 2000 times, or 80% dichlorvos 1000 times, sprayed 1-2 times; After the peach pods hatched, they were sprayed with 50% anti-influx 2000 times liquid, 10% imidacloprid wettable powder 2000-4000 times liquid, and 20% chrysanthemum 3000 times liquid. The winter and spring branches are painted white, antifreeze and sunburn. In the early spring, the diseased area is scraped off. The wound can be coated with Baume 5 degree lime sulfur and then coated with white lead oil or coal tar. Peach infective fluid gum disease: A disease caused by a fungus of the subphylum Tripynaea. The main damage stems. The bacteria lived inside the injured branches and the conidia spread through rain and wind. In the rainy days, a large number of pathogenic bacteria were spilled from the diseased area and flowed down the branches or sputtered on the new shoots. They invaded through the lenticels and wounds and became the main source of the new shoots' primary susceptibility. The activity of latent pathogens in branches is related to temperature. When the temperature is around 15°C, the disease department can overflow the glue. As the temperature rises, the number of fluids in the body increases, and the condition becomes progressively severe. There are two peaks in 1 year, respectively, from late May to late June and 8 From the beginning of the month to the middle of September, the flow of glue stopped after entering the winter. Prevention methods are as follows: 1. Winter pruning clean garden. In winter, branches and trunks must be cut off, concentrated burned, and sprayed with 29% lime sulfur for 150 times to disinfect the tree to reduce the bacteria source; the trunk is painted white (washed with lime water) and brushed with 20-25% lime milk. Disinfection, prevention of freezing injury and sunburnt trunks. 2, scraping applicator. Peach trees before and after germination to remove the lesions, and then smear fungicide, apply 100 times liquid of antibacterial agent 402 before germination or in the spring to apply lesions, with 1:1: 100 Bordeaux fluid or 50% WP 800 times WP Liquid, 50% carbendazim 500 times spraying or smear diseased plants to kill bacteria, reduce the source of infection. 3, drug control. In the early spring, sprouts of 5 Baume degrees limestone or 50% of the special WP can be sprayed with 800 times liquid to kill the pathogenic bacteria after winter and spray once every 10 days and spray 3 times. Spraying 72% of agricultural streptomycin sulfate 4000-5000 times in the early stages from the end of March to the beginning of April, spraying once every 7 days, spraying 2-3 times, and 50% of the special WP can also be used 800 times. Liquid or 50% carbendazim 800-1000 times, 505 thiophanate-methyl 1000-1500 times, sprayed every 10 days, even spray 3-4 times. During the flourishing period of peach blossom (May to June), use 25% SPK 500-800 times, 50% SPW 1000-1500 times, 50% WP wettable powder 800 times. , 70% mancozeb WP can be 500 times or 80% anthrax WP WP 800 times spray, spray every 7-10 days, even spray 3-4 times, the above pesticides are best used interchangeably.