Deep winter cucumber disease prevention
In winter, cucumber diseases in greenhouses include downy mildew, powdery mildew, anthrax, bacterial margin blight, and gray mold. Â Needle Tube
Syringes can also call Disposable Medical Supplies, Disposable Syringe With Needle and Plastic Needle Tube such as some scientific instruments in chromatography to inject through the rubber septum. Injecting gas into a blood vessel will cause an air embolism. The way to remove air from the syringe to avoid embolism is to turn the syringe upside down, tap it lightly, and squeeze out a little bit of fluid before injecting into the bloodstream.
In some cases where accuracy is not the primary concern of germs, such as quantitative chemical analysis, glass syringes are still used due to the small error of the glass syringe and the smooth movement of the push rod.
You can also inject some of the juices into meat with a syringe to improve taste and texture while cooking, or into pastries when baking. Syringes can also fill ink cartridges with ink.
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1. Downy mildew. In the early stage of disease, pale yellow lesions appeared on the leaf surface, the lesions appeared water-immersed, and later lesions turned into light brown or yellow-brown polygonal spots. When the humidity was high, the gray mold layer grew on the back of the leaves. Therefore, in the early onset, Antai 70% WP 700-1000 spray was used. At the peak of onset and cucumber harvesting period, 68.75% silver-fray suspension concentrate was sprayed with 50-75 ml/mu evenly.
2. Powdery mildew. The disease is more harm to the leaves, white round spots appear on the front of the leaves, and gradually enlarge into round spots with indistinct edges. When the disease is serious, it covers the entire leaf. Even the lesions are covered with white hyphae, accompanied by many black spots. The focus of this disease is the control of humidity. In the early stage of the disease, 10% difenoconazole 1500-fold solution and 43% tebuconazole 3000-4000 solution alternately spray.
3. Anthrax disease. The diseased leaves suffered damage, with small water-soaked spots in the early stages, and then expanded into nearly round lesions, reddish-brown, and surrounded by a circle of yellow lines. Under dry conditions, the central lesions ruptured to form perforations and the leaves died of dryness. In the later period, there was a small black spot on the lesion and a red mucilage grew when it was wet. To prevent and treat this disease, use 70% mancozeb WP wettable powder 600-800 times, or 58% metalaxyl MnZn wettable powder 500-600 times spray.
4. Bacterial edge blight. Bacterial edge blight, also known as "rotten head", the top of the heart leaves dry, brown, and gradually rot inside, the top of the following few leaf margins roll down, like a parachute-like, shrinking head is not obvious. Mostly because of the lack of calcium ions in the parietal lobe, it is conducive to bacterial infection. The prevention and treatment of this disease can be applied copper preparations with green Fenwei No. 2 foliar fertilizer spraying.
5. Gray mold. The disease initially developed a water-stained lesion in the flower peduncle and gradually grew a brown-brown moldy layer, causing the flower organ to become soft, shrinking and rot, and gradually spread to the young larvae. The focus of this disease is to prevent the disease. Combine the scented flowers with 0.1% of 50% procymidone-stained flower stalks in the liquid. At the beginning of the onset, spray with 50% procymidone 1000 times solution.