After entering June , the temperature continues to rise, precipitation increases, and the spread of pests and diseases is extremely beneficial. Most of the pests will enter the peak period, such as aphids, leaf miners, red spiders, cabbage caterpillars, diamondback moths, cotton bollworms, Tobacco budworm, virus disease, anthracnose, melon powdery mildew, tomato early and late blight, cucumber downy mildew, gray mold, blight, blight, etc. will be significantly aggravated, and individual pests may cause serious damage in local fields. loss. Therefore, it is necessary to attach great importance to the prevention and control of summer pests and diseases of vegetables, strengthen field observations, detect pests and diseases early, and adopt comprehensive prevention and control measures in a timely manner to minimize damages.
 I. Agricultural control
Strengthen cultivation management and improve the ability of vegetable crops to resist pests and diseases. According to the weather, soil moisture, vegetable growth, watering, reduce the ground temperature, especially tomatoes, sweet (spicy) pepper, cucumber and other fruit expansion period should be timely irrigation, to avoid water shortage, watering should be carried out in the morning and evening, avoid large Water flooding and exposure to hot water in the day; timely drainage after rain, timely tillage, and promote root development. Increase the tracking of organic fertilizer, phosphorus, potassium fertilizer, prevent premature aging, and enhance disease resistance. Some vegetables should be pruned in time, and the pests and leaves, old leaves and pests and fruits that have lost function should be removed and concentrated. Weeding in time, thoroughly clean the pasture after harvest, and reduce the source of the disease.
 Second, physical control
 The yellow plate is used to prevent and control aphids, reduce the transmission medium, and control the aphid transmission virus disease; the lepidopteran pests such as the diamondback moth and the beet armyworm are used to attract adults by using attractants, insect traps and insecticidal lamps.
 Third, chemical control
 In the occurrence period of the leaf miner larvae (the white worms are first seen on the leaves), timely use of 1.8% avermectin EC 3000 times or 20% fenvalerate EC 2000 times spray control;
 The control of Bemisia tabaci, aphids, and blind mites can be sprayed with 25% Aketai 2500 times solution or 3% acetamiprid emulsifiable concentrate 1000-1500 times.
 Plutella xylostella, sugar beet moth and other lepidopteran pest larvae can be treated with 2.5% Kung Fu EC 2000 times or 5% beta-cypermethrin EC 2000 times liquid spray;
 Snails and alfalfa fields can be used with 6% tetraacetaldehyde granules ( trade name Mianda) 350-500 g or 2% drought-dried snail bait 300-600 g, mixed with moist sand 2 kg, evenly applied to plants Between the lines.
 In the early stage of tomato late blight, eggplant plague, sweet (spicy) pepper blight, cucumber blight, etc., 72% frost urea, manganese zinc wettable powder 600 times liquid or 72.2% Plex water 600 times liquid spray can be used for prevention and control;
 Eggplant brown streak disease, sweet (spicy) pepper anthracnose, legume anthracnose, legume anthracnose, melon anthracnose control, use 70% mancozeb WP 400-500 times liquid or 50% at the beginning of the disease Fu · different bacteria wettable powder 800-1000 times liquid spray;
 Melon powdery mildew, downy mildew control can be selected with 25% Amishida suspension 3000 times or 10% high water dispersible granules 1500 times plus 72% metalaxyl manganese zinc wettable powder 600 times liquid spray.
 Note that the drugs are used alternately to prevent the occurrence of resistance to pests and diseases. The insecticides can be used to determine the number of occurrences of pests. The fungicides are generally used 2-3 times, every 7-10 days. Use caution when harvesting vegetables to ensure a safe interval and prevent poisoning.
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