The main measures for the prevention and treatment of gray mold by improving the shed environment are to do a good job in ventilation, light transmission, and dehumidification in the greenhouse. Secondly, we must strengthen the management of fertilizers and waters so that the plants will grow vigorously. The diseased plants and diseased fruits should be cleared and destroyed in time; after the harvest, the gardens can be completely cleared and the soil can be sun dried to reduce the germs.
Wilt disease strikes, warn the disease and the water spreads the vegetable peasant should remove the diseased plant in the shed promptly, and throw carbendazim in the colonization hole to disinfect and sterilize the soil around the diseased plant to prevent the water from passing through the planting hole when watering. The bacteria spread with water. At the same time, it should also be combined with drugs for prevention and treatment. At the beginning of the disease, 50% carbendazim WP can be used to irrigate the roots, irrigation once every 5 days, and irrigation twice. In severe cases, it can be used to irrigate the roots with 30% diphenhydramine EC 1000 times, with 100 ml per dose, irrigated once every other week, and even 3 to 4 times.
We must guard against pests migrating into the shed cleaning booth to remove weeds in the surrounding areas in a timely manner to avoid becoming pest habitats. When using herbicides, sprinkler heads should be installed to prevent herbicides from drifting into the shed.
Set up two networks, whether it is a shed or a greenhouse, set up pest control nets and shade nets.
Multi-pronged prevention and control of whiteflies against mealworms The mealworms on the vegetables are often left in the shed. Therefore, before the vegetable is planted, it is necessary to spray or smoke the shed to kill the adults and eggs in the shed before planting.
Increase the greenhouse temperature for the sensitive characteristics of whitefly, higher than 35 °C activity, low hatching rate and even death of offspring, planting cucumber, loofah, bitter gourd, eggplant and other warm crops in the greenhouse, vegetable farmers can turn off the ventilation after watering In the mouth, the temperature of the shed is raised to 38° C. to 40° C. and maintained for 2 hours. Then, the ventilation and cooling can suppress the breeding of pests.
In order to ensure the prevention and control of insecticide and ovicidal killing, it is necessary to pay attention to both eggs and insecticides. Select 1000 times of imidacloprid with good insecticidal effect or 1000 times of acetamiprid with ciprofloxazide 1000 times.
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