Chinese cabbage has a long growing period and high yield. It has a large demand for nutrients, of which the demand for potassium is the highest, followed by nitrogen, calcium, phosphorus and magnesium. Fertility requirement is characterized by less nutrient absorption at the seedling stage, a significant increase in the rosette period, and a maximum period of burden. Adequate nitrogen nutrition is essential to promote the formation of hypertrophic green leaves and increase photosynthetic efficiency. Late supply of phosphorus and potassium fertilizers is often not easy to bear the ball.
Usually medium fertility conditions per acre base fermentation organic fertilizer 2000 to 2500 kg, urea 4 to 5 kg, 11 to 17 kg of ammonium phosphate, potassium sulfate 6 to 7 kg, calcium nitrate 20 kg. The lotus stage applies 10-12 kg of urea per mu and 7-9 kg of potassium sulfate. In the early stage of the package, 10 to 12 kg of urea and 7 to 9 kg of potassium sulfate are applied per mu. Spraying 0.3% calcium chloride solution or 0.25% to 0.5% calcium nitrate solution during the growth period can reduce dry heartburn. The spraying of 0.5% to 1% urea solution or 0.2% potassium dihydrogen phosphate solution at the beginning of the ball can increase the value of the product.
This device is used to delivery supplemental oxygen to a patient or person in need of extra oxygen.
Nasal oxygen cannula is made from medical grade PVC, consists of connector (universal connector is available), oxygen tubing (usually the length is 2M), nose tip, Y-shape connecting tube.
Features:
1. Green color and white transparent color are both available;
2. Transparent clear tube is helpful for inspection of gas delivery;
3. DEHP Free PVC is available;
4. Softer nose tip can be chosen;
5. Available of three basic sizes, adult, pediatric and infant, and if needed, neonate size is available;
BPAP HF,Niv Mechanical Ventilation,Non Mechanical Ventilation,Non Invasive Pressure Ventilation
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