The growth of the black-leaved cauliflower under the strong light makes the flower ball yellow. In order to ensure the whiteness and tenderness of the flower ball and improve the commerciality, the flower ball should be shamed in production. When the diameter of the flower ball reaches about 10 cm, the old leaves of the base are removed to cover the flower ball, so as to avoid the high temperature, the flower ball is loose or the flower is sucked. It is also possible to bundle 4 to 5 large leaves close to the flower ball to cover the flower ball, avoiding direct sunlight and affecting the quality and appearance. The main diseases of cauliflower production in disease prevention and control of insects include viral diseases, downy mildew, black rot, and soft rot. Viral disease can be sprayed with 20% of virus A wettable powder 500-600 times solution; downy mildew can be sprayed with 68.75% silver method water; soft rot and black rot can be used 72% agricultural streptomycin 4000 times solution Spray control. The main pests are aphids, cabbage caterpillars, diamondback moth, beet armyworm, and Spodoptera litura. Aphids can be sprayed with 2.5% imidacloprid 1000-1500 times spray; cabbage caterpillar, diamondback moth, beet armyworm, Spodoptera litura, etc. can be sprayed with beta-cypermethrin emulsifiable concentrate 1000 times. It is generally about 25 days from the appearance of flower bulbs to harvesting in a timely manner. Premature harvesting will affect the yield, and too late will cause the flower balls to be loose, affecting quality and commerciality. In production, the method of staged harvesting and staged sale should be adopted. Generally, when the flower ball is fully grown, the surface is round and the edge is not scattered, it is harvested. It is harvested every 2 to 3 days, and the flower ball is kept 2~ 3 leaflets to protect the flower ball. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone  Injection Device
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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Autumn cauliflower is both fat and fertile
Water and fertilizer management Cauliflower is a kind of fertilizer that is good for fertilizer and fertilizer. The demand for fertilizer is large during the expansion period of flower bulbs, accounting for more than 70% of the whole growth period. When the heart leaves grow out of the flower ball, the top dressing should be applied again, and the phosphorus and potassium fertilizer should be added appropriately. Combined with watering, 20 kg of compound fertilizer of nitrogen, phosphorus and potassium (select low-nitrogen, high-phosphorus and high-potassium compound fertilizer) per acre, and then water once every 5-7 days, so as to avoid the drought caused the scattered ball. In addition, the quality of cauliflower can be greatly improved by top dressing. Cauliflower is sensitive to trace elements such as boron and copper. It can be combined with anti-disease and pest control to spray high-efficiency liquid fertilizer such as potassium dihydrogen phosphate, green leaf treasure and borax for 2 to 3 times.
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