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Temperature rises quickly in spring to prevent vegetable diseases and insect pests
Since April, the city's temperature has risen faster. Plant protection experts analyzed that it is expected that the pests and diseases in the protected areas will generally be moderate in the period from April to May, and will be close to normal. Individual management and improper prevention and control of the greenhouses will cause moderate occurrences of certain diseases or insect pests. To this end, the Municipal Plant Protection Station reminded farmers to take precautions against vegetable pests and diseases. Recent surveys of plant protection stations in cities and districts and counties have found that the main pests and diseases currently occurring are tomato gray mold, tomato late blight, cucumber downy mildew, whitefly, and leaf miner. From a macro perspective, most of the vegetable pests and diseases in the protected areas are initially developed, and the damage is still light. Only a few greenhouses have serious diseases. To this end, the plant protection department proposed to ensure that the normal growth of vegetables, disease prevention and control to make good cultivation and management, reasonable air release, humidity and temperature; reasonable watering, not pouring water, to avoid cloudy watering or pouring after the Yin Days; timely cultivating, raising the ground temperature to promote new roots; rational fertilization, improve plant resistance to disease. After the dusty days, clean the shed film dust. The diseased leaves that have been removed are brought into the plastic zone and taken out of the field for proper disposal. Do not throw it at random. Timely use of high-efficiency, low-toxicity, low-residue chemical control, for example, when Botrytis cinerea is diverted, Baoguoning (auxin and fungicides) or 0.1-0.3% quick keratin can be added to the taint solution. During the fruit period, spray 6.5% with moldophane or 5% interest dust agent per kilogram of acre; or 20% perkinac smoke 250-300 grams smoke per acre. It can also be sprayed with 65% tomamycin or 50% polymyxin or 50% WP 800 times or 40% SCALO suspension 1000 times. Sclerotinia and Other Vegetable gray molds may be sprayed, smoked or sprayed with the above-mentioned agents.