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Control methods:
1. Use disease-free seeds to leave seedless and disease-free plants.
2. Seed disinfection, 50% carbendazim 500 times solution soaking 20 minutes wash prime or use 50% carbendazim seed dressing (medicine: species = 3:1000).
3. Under the premise of not affecting the normal growth of cucumber, take ventilation and temperature control, irrigation and other measures to regulate the greenhouse and greenhouse temperature and humidity.
4. Chemical control: The beginning of the onset of drug application, every 7 to 10 days once, for 3 to 4 times, and pay attention to rotation of medication. Spraying agent: 140% Fuxing 2000 ~ 3000 times liquid. 220% Black Star Dan 1500 times liquid. 31% Wuyimycin 80 to 100 times liquid. 450% carbendazim 600 to 800 times liquid. 575% chlorothalonil 800 times. 675% thiophanate-methyl 800 times.
The control of cucumber black shank in greenhouse
Cucumber black shank disease is an important disease that affects cucumber yield and quality. Greenhouses and greenhouse cucumbers are most susceptible to disease. In the early stages of leaf infection, a green, round spot was generated. After a few days, the spots burst and perforation, and the edges of the holes were irregular and had yellow halos. Melon vines and petioles form a central depression of scab-like lesions, often with a black mold layer on the lesions. After the melon became infected, the diseased part flowed off milky white or yellowish jelly and formed a dark green sunken lesion. The lesions are also accompanied by a black fungus layer, and the diseased melon strips grow slowly and deformed.