What are the main diseases of cucumbers in protected areas? The main diseases of cucumbers in protected areas include blight, downy mildew, black spot disease, bacterial angular spot disease, blight, gray mold, powdery mildew, virus disease, disease, etc. These diseases not only affect the healthy growth of cucumber plants, but also lead to a serious reduction in cucumber yield. Therefore, today Xiaobian talks about the prevention and control measures of cucumber diseases in protected areas, as follows.
First, improve and improve cultivation techniques
1. Cultivate strong seedlings and cultivate them at the right time.
2. Apply sufficient base fertilizer and appropriate application of phosphorus and potassium fertilizers.
3, reasonable watering, do a good job is to spray water droplets, choose the sunny morning watering.
4. When planting cucumbers in protected areas, it is best to rotate them in a timely manner and use high ridge cultivation to improve the disease resistance of the plants.
Second, planting disease-resistant varieties and adopting grafting techniques, while using pumpkin as a rootstock for cucumber.
Third, chemical control
1. Disinfect the seedbed or seed
(1) Seeding period disinfection or seed dressing with mold-killing 95% powder.
(2) Seed disinfection: soak seeds with 95% carbendazim powder 3000 times solution, sow 2 hours later; spray fertilizer in the seedling stage can add some foliar fertilizer to increase production and prevent disease.
2, cucumber downy mildew and disease
(1) In the early stage of onset or onset, an Anike 500 times solution, a frost solution 500 times solution, a ruminant 500 times solution, and a Dasheng 500 times solution can be used for spray control.
(2) At the peak of the onset, it is possible to use 600 times of the gram-killing solution and 500 times of the gram cream to carry out the spray control.
(3) In the rainy day, you can choose 200g/mu of bacteriostatic agent, fumigation chamber, you can also use the powder of gram and chlorothalonil powder 1kg/mu to reduce the humidity of the greenhouse and prevent disease and cure.
3, cucumber black star disease
(1) In the onset of disease, Xiansheng 500 times solution, DuPont Fuxing 500 times, and myclobutanil rotation were used for spray control.
(2) The rainy weather is controlled by a black star smoke agent 250g/mu fumigation chamber.
4, cucumber gray mold
(1) In the onset of the disease, 500-fold pyridoxamine 500-700 times and quick-krin 500 times were used for the onset of the disease, and the spray was controlled by rotation.
(2) In the rainy days, use the Kekeling smoke agent 250g/mu fumigation chamber to control, or use the powder of Wanglingling powder to spray 2kg per mu.
5, cucumber angular spot disease
(1) At the beginning of the disease, 800 times of liquid can be killed, and 10 million units of agricultural streptomycin can be rotated for spraying.
(2) When the peak of the disease occurs, 500 times of hydrophosic acid is used, and 500 times of liquid can be killed for spraying prevention.
6, cucumber virus disease
In the early stage of the disease, the virus is treated with 500-800 times of liquid (not mixed with other pesticides), and the poisonous plant is 500 times liquid, and the spray is controlled by spraying.
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