Cabbage is a cabbage, also known as cabbage, kohlrabi. When the manure on the ground as basal colonization cabbage, should be administered with the SSP 225 to 300 kg. When cabbage enters the rosette stage, the plant must form a strong assimilated organ, which is the most critical period for absorbing fertilizer and water. At this time, topdressing should be carried out. When applying nitrogen fertilizer such as ammonium bicarbonate, the early maturing varieties are applied 15 to 20 kg per mu, and the medium and late maturing varieties are applied 10 to 15 kg per mu . Watering after topdressing. As the temperature increases, the cabbage enters a period of vigorous growth, and the early-maturing varieties begin to wrap up quickly, eliminating the need for topdressing. Late-maturing varieties, the plants start packet at the heart, and then nitrogen fertilizer per acre 15 to 20 kg, after timely irrigation dressing, in order to promote the growth of the ball leaves.
Gate Valves are called "full-flow" valves; there's a direct unobstructed path for flow right through the middle of the valve. A wedge-shaped brass gate is lowered into a machined slot to close the valve. They should either be completely open or completely closed. Water flowing through a partially open gate valve wears away the metal and causes the valve to fail over time.
Brass Gate Valve, Flanged Gate Valve, High Pressure Gate Valves, Water Gate Valves
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