How to prevent and cure cucumber disease? In some rural areas, cucumber disease is called a small ankle, a card neck, etc., which occurs in the winter and spring period. Let's learn about the comprehensive prevention and treatment technology of cucumber rickets.
First, the symptoms
At the seedling stage of the cucumber seedling, the base or middle part of the embryo stem is water-stained, and then turns into a yellowish brown color, and finally shrinks into a linear shape. Often the cotyledons have not withered, and the seedlings suddenly collapse, causing the seedlings to stick to the ground. Sometimes the mesocotyls and cotyledons of the melon seedlings have been generally rotted and browned. When the humidity is high, white cotton-like hyphae grow near the diseased plant.
Second, comprehensive prevention and control technology
The principle of prevention and cure of cucumber collapse disease: prevention is the main, supplemented by comprehensive prevention and control; agricultural control is the main, supplemented by chemical control. The seedbed should be selected from the wind, sun, and dry land. It is required to be beneficial to drainage, adjust the humidity of the bed soil, and facilitate the lighting and increase the ground temperature.
1. Selection
Low-temperature, low-light and early-maturing cucumber varieties such as Yuanfengyuan No.6, Cucumber, Zhongnong No.7, Yuexiu No.1, Early Qing'er No.2 and Zhongnong No.8 can be selected.
2. Seed disinfection
It can be sterilized by soaking in warm water at 50 ° C for 20 minutes, or germinated by sterilizing at 70 ° C for 72 hours. It is recommended to use cucumber seed coating agent No. 9-2 at a dose of 0.5% of the seed weight.
3. Seedbed treatment
The seedbed or shed is often used to compost the Japanese enzyme bacteria to reduce the amount of fertilizer and pesticide application. The nursery bed can be renewed when necessary, and the compost or the fully decomposed organic fertilizer can be applied. In the production, the soil in the old vegetable garden is used as the bed soil. 15 to 20 days before sowing, use 40% of the seed dressing powder plus 50% Fumei double powder to mix in the ratio of 1..1, or use 40% seed dressing double powder, 8 grams per square meter seedbed, mix dry 40 kg of soil, fully mixed and ready for use. Before the sowing, the bottom water is poured. After the water has been infiltrated, take 1/3 of the mixed soil and sprinkle it on the bed surface, then spread the seeds of the good buds, and finally cover the remaining 2/3 of the soil. On the seed, the soil is about 1 cm thick, so that the seeds are sandwiched in the middle of the soil.
4. Strengthen seedling management
After the seedlings, the seedling bed or shed temperature is kept at 25-30 °C during the day, and kept at 10-15 °C during the night to prevent cold current invasion. The humidity of the seedbed or shed should not be too high. When it is rainy or rainy or snowy or the soil is not dry, it should be watered or not watered. It must be lightly poured with watering can when watering, so as to avoid excessive humidity. When there are water droplets on the plastic film or glass and seedling leaves, it is necessary to ventilate or sprinkle some wood ash to dehumidify.
5. Chemical control
(1) Adding appropriate amount of soil additives (made with rice husks, bagasse, shrimp shell powder, tannic acid slag, etc. plus appropriate amount of urea, superphosphate, potassium nitrate, etc.) in the soil can reduce the incidence.
(2) Using carbon dioxide fertilization technology, or applying Huimanfeng multi-composite organic active liquid fertilizer, 320 ml per mu, diluted to 500 times liquid, sprayed twice.
(3) 50 g of copper sulfate and 375 g of ammonium hydrogencarbonate were mixed. After mixing the two, the mixture was mixed with 100 g of slaked lime. After mixing, it was packed in a plastic bag, and the bag was closed and sealed for 24 hours. After mixing 5 kg of fine soil, evenly spread the seedbed 10 square meters, sprinkle the seedling bed, remove the soil on the seedling leaves, and pay attention to ventilation and ventilation to eliminate excess ammonia.
(4) spraying 800 times of plant growth regulator such as vegetable fertilizer or triacontanol to enhance the disease resistance of the plant.
(5) Optional 72% Plex water 500-800 times solution, 80% Xinwansheng wettable powder 600 times liquid, 72% mildew WP 800-1000 times liquid or 64% anti-virus WP wettable powder Spray 500~600 times liquid. Spray once every 7 days, even spray 2 or 3 times.
The above is all the contents of the cucumber disease. The vegetable farmers who are troubled in this area can collect the spare. What do you want to know about the prevention and treatment of cucumber?
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