In the process of growth and development, wheat not only needs a lot of elements such as nitrogen, phosphorus and potassium. Trace elements also play an important role in the growth and development of wheat. When trace elements are lacking, wheat will show certain symptoms of deficiency:
Zinc deficiency: Zinc deficiency in wheat growth period, the leaf margin of wheat leaves is shrunken or twisted, and the veins are greenish yellow to white on both sides, showing yellow, white and green stripes, and the heading is late and the earlets are small.
Iron deficiency: The wheat is deficient in iron during the growing season. At the beginning, the young leaves are green and yellow, the veins remain green, and the whole leaves are green. Sometimes the whole leaves are yellowish white.
Copper deficiency: The wheat is deficient in copper during the growing season, the tip of the wheat leaves turns white, the edges are yellow-gray, and the yellow-leaf yellow leaves appear. In severe cases, it is not possible to head at the heading stage.
Manganese deficiency: When wheat is deficient in manganese, the leaves are soft and drooping, and the veins turn from green to yellow.
Molybdenum deficiency: When the wheat is deficient in molybdenum, the leaf color becomes lighter, and fine yellow and white spots appear along the veins in parallel, and gradually become linear or flaky, and finally the front part of the blade is dried up.
Boron deficiency: When the wheat is deficient in boron, the growth period is delayed, and the leaf tip will be purple-brown. At the same time, its flowers are not loose powder, pollen is less or deformed, sometimes there is no pollen, the ovary is laterally enlarged, the husk is not closed in the early stage, and it is withered in the later stage.
A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure. High-pressure gas cylinders are also called bottles. Inside the cylinder the stored contents may be in a state of compressed gas, vapor over liquid, supercritical fluid, or dissolved in a substrate material, depending on the physical characteristics of the contents. A typical gas cylinder design is elongated, standing upright on a flattened bottom end, with the valve and fitting at the top for connecting to the receiving apparatus.Our cylinders are divided into double wire port and hexagonal valve. Double wire port is mainly exported to Middle East countries, while hexagonal valve is mainly exported to Nigeria.According to the capacity, we have hexagon valves in 3kg, 5kg, 6kg, 10kg and 12.5kg.We have one kilogram, two kilogram, three kilogram, five kilogram double filament
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