Cucumber is a kind of vegetable that people like to eat in summer, and this kind of vegetable can be eaten almost all the year. At the same time, cucumber is also the most cultivated vegetable in the field. Generally, cucumber vine can be seen in the countryside, but Cucumber is also a kind of vegetable with more pests and diseases!
First, the disease conditions 1, the disease of the bacteria like to adhere to the seeds of cucumber, the bacteria will not have movement, but in the residue of the disease plant winter, and then wait until the next year to wake up to invade the cucumber, and It has a very long life and generally lasts for two years. Its main mode of transmission is the spread of rainwater and irrigation water. After the plants absorb water, they can enter the interior of the plant directly from the pores or the wounds of the plant. It can be used for secondary transmission, and it can be repeatedly infected after a rain.
2, planting cucumbers in greenhouses, the air humidity inside is generally relatively large, it is easy to cause pathogens purulent, disease pus is easy to infect other parts and plants, while the resistance of cucumber will decline, if everyone is not If you pay attention, it is easy to repeat and infect.
3, the optimal temperature of the disease is between 24-28 degrees, the highest can reach 39 degrees, the low is up to 4 degrees, the bacteria is not resistant to high temperatures, if the temperature is as high as 50 degrees, it will be within ten minutes Will die, the best humidity is about 80%, the incidence of water on the leaves is high, so it seems that the disease belongs to a high temperature and high humidity disease.
Second, prevention and treatment methods
1. Because the temperature can be maintained at more than 30 degrees in summer, it is a high incidence of bacterial bacterial leaf spot disease. This disease is mainly caused by leaves and rhizomes. The pathology of this disease and the condition of cucumber downy mildew. Very similar, so when choosing prevention and control measures, it will bring certain difficulties. When you judge, you must carefully observe whether it is downy mildew or angular spot disease. Otherwise, if you use the wrong method to spray the wrong medicine, it will definitely cause For death and economic losses, you should take measures as soon as possible.
2. When selecting seedlings, try to choose seedlings with strong disease resistance, which can be done when selecting seeds.
3. When picking seeds, you should choose healthy, non-disease varieties, so that the cultivated species will be excellent.
4. Seeds need to be sterilized in a 70-degree incubator for three days before sowing, and then soaked with 50 degrees of warm water. Finally, they can be fished out and dried for sowing.
5. Heavy disease fields should be rotated for more than 2 years. In the growing season, their diseased leaves and diseased plants should be cleaned up in time to avoid secondary infection, and the directly buried or burned after cleaning.
The above is the prevention and treatment method of cucumber bacterial angular spot disease in summer. Have you learned it? Usually, you should observe more and try to take corresponding measures in the early stage of the disease. In time, you should strengthen prevention and treatment, so as to avoid getting sick. .
This article URL: Prevention and treatment of cucumber bacterial angular leaf spot and special effects
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