In summer, high temperatures and high levels of humidity make pests and diseases more serious. Prevention and control should adhere to the principle of “prevention first, comprehensive prevention and controlâ€. In addition to agricultural measures or biological control, high-efficiency, low-toxic, low-residue chemical pesticides can also be used for prevention and control. However, it is necessary to pay attention to the safe interval of drug use during the harvest period.
First, pest control. The common insect pests in summer vegetables include roundworm, whitefly, and leafminer, and they can be sprayed with 1500-2000 times solution of worms or 1000 times solution of Puercitol or 20% solution of Kangfuduo 4000 times. Cabbage also has cabbage caterpillars, vegetable lice, night moth, etc., can be used dimdicarb 1 or 3 500-1000 times or 10% cypermethrin EC 1500 times spray control. There are bean pods on legumes, which can be sprayed with 2.5% deltamethrin 3000 times solution or diflubenzuron 3 500-1000 times solution or Vegetable Dan 1500-2000 times solution.
Second, the prevention and treatment of diseases
1. Tomato: Early blight can be used 77% can kill 500 times liquid or agricultural streptomycin 3000-4000 times liquid spray prevention; late blight can use 64% antiviral 500 times or 72% gel 600 times or 72.2% Lectra 800 times spray control; Botrytis cinerea can be controlled with 50% Sulfazone 2000 times solution or 50% Epcotinine 1500 times solution; Leaf mold can be used 47% Garenon 700-800 times solution or 50% polymyxin Spirit 800 times spray control.
2. Cucumber: Downy mildew can be controlled with 72.2% Prec 800 times or 64% antivirus 400 times or 72% Kelu 600-700 times; powdery mildew can be used with Fuxing 800-1000 times or 25% Triadime 2000 Double spray control.
3, cabbage: downy mildew can be used 72.2% Prec 800 times or 64% antiviral 400 times or 72% Kelu 600 times spray control; soft rot available agricultural streptomycin 3000-4000 times or new plant Spraying with 4000 times liquid of the bacterin; the virus disease can be controlled with 1.5% plant disease spirit 1000 times solution plus green Fenway 800-1000 times solution, or 20% virus A500 times solution or NS-83 increasing agent 100 times solution spray.
4, celery: spot blight can be used 75% chlorothalonil 600 times or 64% antiviral 500 times or 60% aluminum alfa 500 times to control; epidemic diseases can be used noble copper 800-1000 times or agricultural streptomycin 4000 Times of liquid or 77% can kill 500 times spray control; virus disease can be used 1.5% plant disease Ling 1000 times fluid harvested No. 1 800-1000 times or 20% virus A500 times or NS-83 agent 100 times Liquid spray control.
5, legumes and vegetables: rust can be used 40% Fuxing 500 times spray control; spot blight available 75% chlorothalonil 1000 times plus 70% mancozeb 1000 times or 75% chlorothalonil 1000 times plus 70 % thiophanate-methyl 1000 times spray control; virus disease can be used 1.5% plant disease Ling 1000 times with harvest No. 1 800-1000 times or 20% of the virus A500 times or booster 100 times spray control.
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