Respircare oxygen concentrator contains 3-liter machine (AO3/AO3W) and 5-liter machine (AO5/AO5W). Oxygen is produced by molecular sieves, can provide 1-5L/min oxygen flow with oxygen concentration ≥93%. It has small volume, low noise and long service life advantage, is suitable for oxygen therapy of homecare. 5L Oxygen Concentrator,Oxygen Concentrator Machine,Cabinet Oxygen Concentrator,Oxygen Concentrator Equipment Shenyang RMS MEDICAL TECH CO.,LTD , https://www.medicalrms.com
The Fe2O3 in the soil is slightly soluble in acid and easily absorbed by the grapes. When the soil is alkaline, Fe2O3 is not easily absorbed and precipitated from the soil solution, so alkaline iron deficiency prone to iron deficiency. Iron has the insoluble nature of soluble phosphoric acid, so the soil containing more iron easily causes the deficiency of phosphorus. When chlorosis is found on the leaves, 0.3 to 0.5% of ferrous sulfate should be sprayed immediately. In the early spring or fall dormant period, the vinegar is sprayed with 5% ferrous sulfate solution. If 0.15% citric acid is added in the ferrous sulfate solution, the ferrous iron can be prevented from being converted into trivalent iron and not easily absorbed. The method of prevention is to increase phosphorus and potassium fertilizers in the soil, and pay attention to drainage in deaf and sticky places.
Grape iron deficiency
Iron is related to the production of chlorophyll and it is also a component of some respiratory enzymes. The grapes are extremely sensitive to iron deficiency. When the soil is iron-deficient, the leaves appear yellow. The young leaves on the new shoot show the symptoms first. The leaves of the young leaves are pale green or yellow, leaving only some green along the veins on both sides. This is mainly due to changes in the color and structure of the chloroplast. When severe, young leaves gradually dry off from top to bottom. In this case, the breathing and transpiration intensity is reduced, and assimilation is hindered or stopped. Due to malnutrition, the shoots had poor lignification, weak cold resistance, poor berry development, and light greenish spikes and grains. When the iron content is sufficient, the grape berries are deeply colored, the leaves are green, the wine is rich in color and the flavor is good. When iron is excessive, the wine is prone to turbidity.